85821957732 has 24 divisors (see below), whose sum is σ = 228858554176. Its totient is φ = 24520559328.

The previous prime is 85821957677. The next prime is 85821957743. The reversal of 85821957732 is 23775912858.

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, 510844903 + ... + 510845070.

Almost surely, 2^85821957732 is an apocalyptic number.

It is an amenable number.

85821957732 is an abundant number, since it is smaller than the sum of its proper divisors (143036596444).

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

85821957732 is a wasteful number, since it uses less digits than its factorization.

85821957732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021689987 (or 1021689985 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 57.

The spelling of 85821957732 in words is "eighty-five billion, eight hundred twenty-one million, nine hundred fifty-seven thousand, seven hundred thirty-two".