85901611992 has 32 divisors (see below), whose sum is σ = 245433177600. Its totient is φ = 24543317664.

The previous prime is 85901611969. The next prime is 85901612021. The reversal of 85901611992 is 29911610958.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255659392 + ... + 255659727.

It is an arithmetic number, because the mean of its divisors is an integer number (7669786800).

Almost surely, 2^85901611992 is an apocalyptic number.

It is an amenable number.

85901611992 is an abundant number, since it is smaller than the sum of its proper divisors (159531565608).

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

85901611992 is a wasteful number, since it uses less digits than its factorization.

85901611992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511319135 (or 511319131 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 51.

The spelling of 85901611992 in words is "eighty-five billion, nine hundred one million, six hundred eleven thousand, nine hundred ninety-two".