86129621916 has 48 divisors (see below), whose sum is σ = 229159363104. Its totient is φ = 24942514176.

The previous prime is 86129621857. The next prime is 86129621923. The reversal of 86129621916 is 61912692168.

It is a super-2 number, since 2×86129621916² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16235965 + ... + 16241268.

It is an arithmetic number, because the mean of its divisors is an integer number (4774153398).

Almost surely, 2^86129621916 is an apocalyptic number.

It is an amenable number.

86129621916 is an abundant number, since it is smaller than the sum of its proper divisors (143029741188).

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

86129621916 is a wasteful number, since it uses less digits than its factorization.

86129621916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32477270 (or 32477268 counting only the distinct ones).

The product of its digits is 559872, while the sum is 51.

The spelling of 86129621916 in words is "eighty-six billion, one hundred twenty-nine million, six hundred twenty-one thousand, nine hundred sixteen".