51709990474 has 32 divisors (see below), whose sum is σ = 83591640000. Its totient is φ = 23911542144.

The previous prime is 51709990469. The next prime is 51709990487. The reversal of 51709990474 is 47409990715.

It is a super-2 number, since 2×51709990474² (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 15 ways as a sum of consecutive naturals, for example, 3405852 + ... + 3421000.

It is an arithmetic number, because the mean of its divisors is an integer number (2612238750).

Almost surely, 2^51709990474 is an apocalyptic number.

51709990474 is a deficient number, since it is larger than the sum of its proper divisors (31881649526).

51709990474 is a wasteful number, since it uses less digits than its factorization.

51709990474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17302.

The product of its (nonzero) digits is 2857680, while the sum is 55.

The spelling of 51709990474 in words is "fifty-one billion, seven hundred nine million, nine hundred ninety thousand, four hundred seventy-four".