51585004490 has 64 divisors (see below), whose sum is σ = 95629403520. Its totient is φ = 20026982400.

The previous prime is 51585004487. The next prime is 51585004501. The reversal of 51585004490 is 9440058515.

It is a super-2 number, since 2×51585004490² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32219690 + ... + 32221290.

It is an arithmetic number, because the mean of its divisors is an integer number (1494209430).

Almost surely, 2^51585004490 is an apocalyptic number.

51585004490 is a deficient number, since it is larger than the sum of its proper divisors (44044399030).

51585004490 is a wasteful number, since it uses less digits than its factorization.

51585004490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2327.

The product of its (nonzero) digits is 144000, while the sum is 41.

The spelling of 51585004490 in words is "fifty-one billion, five hundred eighty-five million, four thousand, four hundred ninety".