86920991815872 has 28 divisors (see below), whose sum is σ = 229978457513336. Its totient is φ = 28973663938560.

The previous prime is 86920991815829. The next prime is 86920991815891. The reversal of 86920991815872 is 27851819902968.

It is a super-2 number, since 2×86920991815872² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 86920991815794 and 86920991815803.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226356749329 + ... + 226356749712.

It is an arithmetic number, because the mean of its divisors is an integer number (8213516339762).

Almost surely, 2^{86920991815872} is an apocalyptic number.

It is an amenable number.

86920991815872 is an abundant number, since it is smaller than the sum of its proper divisors (143057465697464).

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

86920991815872 is a wasteful number, since it uses less digits than its factorization.

86920991815872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452713499056 (or 452713499046 counting only the distinct ones).

The product of its (nonzero) digits is 313528320, while the sum is 75.

The spelling of 86920991815872 in words is "eighty-six trillion, nine hundred twenty billion, nine hundred ninety-one million, eight hundred fifteen thousand, eight hundred seventy-two".