51540404396 has 48 divisors (see below), whose sum is σ = 100596263040. Its totient is φ = 22941784320.

The previous prime is 51540404387. The next prime is 51540404417. The reversal of 51540404396 is 69340404515.

It is a super-2 number, since 2×51540404396² (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, 1355030 + ... + 1392546.

It is an arithmetic number, because the mean of its divisors is an integer number (2095755480).

Almost surely, 2^51540404396 is an apocalyptic number.

It is an amenable number.

51540404396 is a deficient number, since it is larger than the sum of its proper divisors (49055858644).

51540404396 is a wasteful number, since it uses less digits than its factorization.

51540404396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38474 (or 38472 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 51540404396 in words is "fifty-one billion, five hundred forty million, four hundred four thousand, three hundred ninety-six".