86651993934 has 96 divisors (see below), whose sum is σ = 212433792480. Its totient is φ = 25295328000.

The previous prime is 86651993929. The next prime is 86651993963. The reversal of 86651993934 is 43939915668.

86651993934 is a `hidden beast` number, since 86 + 6 + 519 + 9 + 3 + 9 + 34 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 681372 + ... + 798480.

It is an arithmetic number, because the mean of its divisors is an integer number (2212852005).

Almost surely, 2^86651993934 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86651993934, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106216896240).

86651993934 is an abundant number, since it is smaller than the sum of its proper divisors (125781798546).

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

86651993934 is a wasteful number, since it uses less digits than its factorization.

86651993934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117266 (or 117263 counting only the distinct ones).

The product of its digits is 37791360, while the sum is 63.

The spelling of 86651993934 in words is "eighty-six billion, six hundred fifty-one million, nine hundred ninety-three thousand, nine hundred thirty-four".