85517070031936 has 21 divisors (see below), whose sum is σ = 169698082649511. Its totient is φ = 42758498025792.

The previous prime is 85517070031909. The next prime is 85517070031937. The reversal of 85517070031936 is 63913007071558.

The square root of 85517070031936 is 9247544.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85517070031937) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 73402381 + ... + 74558323.

Almost surely, 2^{85517070031936} is an apocalyptic number.

85517070031936 is the 9247544-th square number.

It is an amenable number.

85517070031936 is a deficient number, since it is larger than the sum of its proper divisors (84181012617575).

85517070031936 is an frugal number, since it uses more digits than its factorization.

85517070031936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2311898 (or 1155945 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 55.

The spelling of 85517070031936 in words is "eighty-five trillion, five hundred seventeen billion, seventy million, thirty-one thousand, nine hundred thirty-six".