85612372474 has 4 divisors (see below), whose sum is σ = 128418558714. Its totient is φ = 42806186236.

The previous prime is 85612372459. The next prime is 85612372493. The reversal of 85612372474 is 47427321658.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 74232816849 + 11379555625 = 272457^2 + 106675^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21403093117 + ... + 21403093120.

Almost surely, 2^85612372474 is an apocalyptic number.

85612372474 is a deficient number, since it is larger than the sum of its proper divisors (42806186240).

85612372474 is a wasteful number, since it uses less digits than its factorization.

85612372474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42806186239.

The product of its digits is 2257920, while the sum is 49.

The spelling of 85612372474 in words is "eighty-five billion, six hundred twelve million, three hundred seventy-two thousand, four hundred seventy-four".