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2157215143588 = 226532173937991
BaseRepresentation
bin11111011001000100000…
…010101101011010100100
321122020011000212122010221
4133121010002231122210
5240320434034043323
64331002211054124
7311565542114251
oct37310402553244
97566130778127
102157215143588
1176196278a11a
122aa0baba1344
1312856987685b
14765a45a2428
153b1aa22255d
hex1f6440ad6a4

2157215143588 has 24 divisors (see below), whose sum is σ = 3781181154240. Its totient is φ = 1076877912480.

The previous prime is 2157215143561. The next prime is 2157215143597. The reversal of 2157215143588 is 8853415127512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56763273 + ... + 56801263.

It is an arithmetic number, because the mean of its divisors is an integer number (157549214760).

Almost surely, 22157215143588 is an apocalyptic number.

It is an amenable number.

2157215143588 is a deficient number, since it is larger than the sum of its proper divisors (1623966010652).

2157215143588 is a wasteful number, since it uses less digits than its factorization.

2157215143588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60387 (or 60385 counting only the distinct ones).

The product of its digits is 2688000, while the sum is 52.

The spelling of 2157215143588 in words is "two trillion, one hundred fifty-seven billion, two hundred fifteen million, one hundred forty-three thousand, five hundred eighty-eight".

Divisors: 1 2 4 653 1306 2612 21739 37991 43478 75982 86956 151964 14195567 24808123 28391134 49616246 56782268 99232492 825886349 1651772698 3303545396 539303785897 1078607571794 2157215143588