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87678730650155 = 531565669230001
BaseRepresentation
bin10011111011111001001011…
…100110000100001000101011
3102111110000010111021110212012
4103323321023212010020223
542443012020021301110
6510251015223310135
724316402452534011
oct2373711346041053
9374400114243765
1087678730650155
1125a343827437a7
129a008855ab34b
1339c00b8286a68
14179195d3c68b1
15a20ad1cda905
hex4fbe4b98422b

87678730650155 has 8 divisors (see below), whose sum is σ = 108608492160384. Its totient is φ = 67880307600000.

The previous prime is 87678730650089. The next prime is 87678730650157. The reversal of 87678730650155 is 55105603787678.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87678730650155 - 234 = 87661550780971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87678730650157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282834614846 + ... + 282834615155.

It is an arithmetic number, because the mean of its divisors is an integer number (13576061520048).

Almost surely, 287678730650155 is an apocalyptic number.

87678730650155 is a deficient number, since it is larger than the sum of its proper divisors (20929761510229).

87678730650155 is a wasteful number, since it uses less digits than its factorization.

87678730650155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565669230037.

The product of its (nonzero) digits is 296352000, while the sum is 68.

The spelling of 87678730650155 in words is "eighty-seven trillion, six hundred seventy-eight billion, seven hundred thirty million, six hundred fifty thousand, one hundred fifty-five".

Divisors: 1 5 31 155 565669230001 2828346150005 17535746130031 87678730650155