51585636517606 has 32 divisors (see below), whose sum is σ = 81968410903392. Its totient is φ = 24264252587520.

The previous prime is 51585636517567. The next prime is 51585636517637. The reversal of 51585636517606 is 60671563658515.

It is a happy number.

It is a super-2 number, since 2×51585636517606² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1251420076 + ... + 1251461296.

It is an arithmetic number, because the mean of its divisors is an integer number (2561512840731).

Almost surely, 2^{51585636517606} is an apocalyptic number.

51585636517606 is a deficient number, since it is larger than the sum of its proper divisors (30382774385786).

51585636517606 is a wasteful number, since it uses less digits than its factorization.

51585636517606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57544.

The product of its (nonzero) digits is 136080000, while the sum is 64.

The spelling of 51585636517606 in words is "fifty-one trillion, five hundred eighty-five billion, six hundred thirty-six million, five hundred seventeen thousand, six hundred six".