51400040332 has 24 divisors (see below), whose sum is σ = 91536106592. Its totient is φ = 25247894400.

The previous prime is 51400040309. The next prime is 51400040353. The reversal of 51400040332 is 23304000415.

It is a super-2 number, since 2×51400040332² (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 7 ways as a sum of consecutive naturals, for example, 72832 + ... + 328792.

Almost surely, 2^51400040332 is an apocalyptic number.

It is an amenable number.

51400040332 is a deficient number, since it is larger than the sum of its proper divisors (40136066260).

51400040332 is a wasteful number, since it uses less digits than its factorization.

51400040332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256849 (or 256847 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 51400040332 its reverse (23304000415), we get a palindrome (74704040747).

The spelling of 51400040332 in words is "fifty-one billion, four hundred million, forty thousand, three hundred thirty-two".