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55142013688 = 23172317839887
BaseRepresentation
bin110011010110101110…
…000101101011111000
312021022221102112100021
4303112232011223320
51400412323414223
641155404420224
73661320245206
oct632656055370
9167287375307
1055142013688
1121427258043
12a82ab47674
13527a162388
1429515dc076
15167aeee65d
hexcd6b85af8

55142013688 has 64 divisors (see below), whose sum is σ = 114308444160. Its totient is φ = 24804527616.

The previous prime is 55142013677. The next prime is 55142013691. The reversal of 55142013688 is 88631024155.

It is a super-2 number, since 2×551420136882 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5572281 + ... + 5582167.

It is an arithmetic number, because the mean of its divisors is an integer number (1786069440).

Almost surely, 255142013688 is an apocalyptic number.

It is an amenable number.

55142013688 is an abundant number, since it is smaller than the sum of its proper divisors (59166430472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55142013688 is a wasteful number, since it uses less digits than its factorization.

55142013688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11716 (or 11712 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 43.

The spelling of 55142013688 in words is "fifty-five billion, one hundred forty-two million, thirteen thousand, six hundred eighty-eight".

Divisors: 1 2 4 8 17 23 34 46 68 92 136 184 391 782 1564 1783 3128 3566 7132 9887 14264 19774 30311 39548 41009 60622 79096 82018 121244 164036 168079 227401 242488 328072 336158 454802 672316 697153 909604 1344632 1394306 1819208 2788612 3865817 5577224 7731634 15463268 17628521 30926536 35257042 70514084 141028168 299684857 405455983 599369714 810911966 1198739428 1621823932 2397478856 3243647864 6892751711 13785503422 27571006844 55142013688