85701391504 has 45 divisors (see below), whose sum is σ = 167444310873. Its totient is φ = 42492957696.

The previous prime is 85701391499. The next prime is 85701391543. The reversal of 85701391504 is 40519310758.

The square root of 85701391504 is 292748.

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

It can be written as a sum of positive squares in only one way, i.e., 52373237904 + 33328153600 = 228852^2 + 182560^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 190871472 + ... + 190871920.

Almost surely, 2^85701391504 is an apocalyptic number.

85701391504 is the 292748-th square number.

It is an amenable number.

85701391504 is a deficient number, since it is larger than the sum of its proper divisors (81742919369).

85701391504 is an frugal number, since it uses more digits than its factorization.

85701391504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232 (or 614 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 85701391504 in words is "eighty-five billion, seven hundred one million, three hundred ninety-one thousand, five hundred four".