85700972836 has 6 divisors (see below), whose sum is σ = 149976702470. Its totient is φ = 42850486416.

The previous prime is 85700972801. The next prime is 85700972837. The reversal of 85700972836 is 63827900758.

It can be written as a sum of positive squares in only one way, i.e., 59728427236 + 25972545600 = 244394^2 + 161160^2 .

It is not an unprimeable number, because it can be changed into a prime (85700972837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10712621601 + ... + 10712621608.

Almost surely, 2^85700972836 is an apocalyptic number.

It is an amenable number.

85700972836 is a deficient number, since it is larger than the sum of its proper divisors (64275729634).

85700972836 is a wasteful number, since it uses less digits than its factorization.

85700972836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21425243213 (or 21425243211 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 85700972836 in words is "eighty-five billion, seven hundred million, nine hundred seventy-two thousand, eight hundred thirty-six".