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215408020068152 = 23972932866333053
BaseRepresentation
bin110000111110100110010110…
…100001001001011100111000
31001020200210202021201111000222
4300332212112201021130320
5211213221111114140102
62042045024525115212
763241500355050212
oct6076462641113470
91036623667644028
10215408020068152
11626aa03472011a
12201ab6260b8b08
139326b73568242
143b29b378ab5b2
1519d83cc25daa2
hexc3e996849738

215408020068152 has 64 divisors (see below), whose sum is σ = 409473200566080. Its totient is φ = 106222938550272.

The previous prime is 215408020068089. The next prime is 215408020068173. The reversal of 215408020068152 is 251860020804512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6517032458 + ... + 6517065510.

It is an arithmetic number, because the mean of its divisors is an integer number (6398018758845).

Almost surely, 2215408020068152 is an apocalyptic number.

It is an amenable number.

215408020068152 is a deficient number, since it is larger than the sum of its proper divisors (194065180497928).

215408020068152 is a wasteful number, since it uses less digits than its factorization.

215408020068152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62112 (or 62108 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 44.

The spelling of 215408020068152 in words is "two hundred fifteen trillion, four hundred eight billion, twenty million, sixty-eight thousand, one hundred fifty-two".

Divisors: 1 2 4 8 97 194 293 388 586 776 1172 2344 28421 28663 33053 56842 57326 66106 113684 114652 132212 227368 229304 264424 2780311 3206141 5560622 6412282 8398259 9684529 11121244 12824564 16796518 19369058 22242488 25649128 33593036 38738116 67186072 77476232 814631123 939399313 947398139 1629262246 1878798626 1894796278 3258524492 3757597252 3789592556 6517048984 7515194504 7579185112 91897619483 183795238966 277587654727 367590477932 555175309454 735180955864 1110350618908 2220701237816 26926002508519 53852005017038 107704010034076 215408020068152