86635956690 has 48 divisors (see below), whose sum is σ = 225286752600. Its totient is φ = 23099510016.

The previous prime is 86635956683. The next prime is 86635956697. The reversal of 86635956690 is 9665953668.

86635956690 is a `hidden beast` number, since 8 + 6 + 63 + 5 + 9 + 566 + 9 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (86635956683) and next prime (86635956697).

It can be written as a sum of positive squares in 4 ways, for example, as 56669230809 + 29966725881 = 238053^2 + 173109^2 .

It is a super-2 number, since 2×86635956690² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86635956697) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 574096 + ... + 709124.

Almost surely, 2^86635956690 is an apocalyptic number.

86635956690 is an abundant number, since it is smaller than the sum of its proper divisors (138650795910).

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

86635956690 is a wasteful number, since it uses less digits than its factorization.

86635956690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142171 (or 142168 counting only the distinct ones).

The product of its (nonzero) digits is 62985600, while the sum is 63.

The spelling of 86635956690 in words is "eighty-six billion, six hundred thirty-five million, nine hundred fifty-six thousand, six hundred ninety".