86956031999988 has 36 divisors (see below), whose sum is σ = 225166635711108. Its totient is φ = 28278384389760.

The previous prime is 86956031999987. The next prime is 86956032000037. The reversal of 86956031999988 is 88999913065968.

86956031999988 is a `hidden beast` number, since 8 + 6 + 9 + 560 + 31 + 9 + 9 + 9 + 9 + 8 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 23706109307664 + 63249922692324 = 4868892^2 + 7952982^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×86956031999988² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 86956031999898 and 86956031999907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86956031999987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29456648931 + ... + 29456651882.

It is an arithmetic number, because the mean of its divisors is an integer number (6254628769753).

Almost surely, 2^{86956031999988} is an apocalyptic number.

It is an amenable number.

86956031999988 is an abundant number, since it is smaller than the sum of its proper divisors (138210603711120).

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

86956031999988 is a wasteful number, since it uses less digits than its factorization.

86956031999988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58913300864 (or 58913300859 counting only the distinct ones).

The product of its (nonzero) digits is 16325867520, while the sum is 90.

The spelling of 86956031999988 in words is "eighty-six trillion, nine hundred fifty-six billion, thirty-one million, nine hundred ninety-nine thousand, nine hundred eighty-eight".