86921156085 has 32 divisors (see below), whose sum is σ = 143344753920. Its totient is φ = 44955724800.

The previous prime is 86921156083. The next prime is 86921156107. The reversal of 86921156085 is 58065112968.

It is not a de Polignac number, because 86921156085 - 2¹ = 86921156083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86921156081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 604020 + ... + 733949.

It is an arithmetic number, because the mean of its divisors is an integer number (4479523560).

Almost surely, 2^86921156085 is an apocalyptic number.

It is an amenable number.

86921156085 is a deficient number, since it is larger than the sum of its proper divisors (56423597835).

86921156085 is a wasteful number, since it uses less digits than its factorization.

86921156085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338109.

The product of its (nonzero) digits is 1036800, while the sum is 51.

The spelling of 86921156085 in words is "eighty-six billion, nine hundred twenty-one million, one hundred fifty-six thousand, eighty-five".