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87276952015487 = 1322990732323133
BaseRepresentation
bin10011110110000010111111…
…101110001101001001111111
3102110000121001211220002210022
4103312002333232031021333
542414421144203443422
6505342251145002355
724245360142512123
oct2366027756151177
9373017054802708
1087276952015487
1125899a4711a8a3
129956a367833bb
1339912482c9390
14177a326d0d583
15a154191a9342
hex4f60bfb8d27f

87276952015487 has 16 divisors (see below), whose sum is σ = 94505086263840. Its totient is φ = 80123096771712.

The previous prime is 87276952015469. The next prime is 87276952015493. The reversal of 87276952015487 is 78451025967278.

It is a cyclic number.

It is not a de Polignac number, because 87276952015487 - 212 = 87276952011391 is a prime.

It is a super-2 number, since 2×872769520154872 (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87276952015487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87276952015447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13461428 + ... + 18861705.

It is an arithmetic number, because the mean of its divisors is an integer number (5906567891490).

Almost surely, 287276952015487 is an apocalyptic number.

87276952015487 is a deficient number, since it is larger than the sum of its proper divisors (7228134248353).

87276952015487 is a wasteful number, since it uses less digits than its factorization.

87276952015487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32324282.

The product of its (nonzero) digits is 474163200, while the sum is 71.

The spelling of 87276952015487 in words is "eighty-seven trillion, two hundred seventy-six billion, nine hundred fifty-two million, fifteen thousand, four hundred eighty-seven".

Divisors: 1 13 229 907 2977 11791 207703 2700139 32323133 420200729 7401997457 29317081631 96225966941 381122061203 6713611693499 87276952015487