51456404007 has 12 divisors (see below), whose sum is σ = 77078729000. Its totient is φ = 34304269176.

The previous prime is 51456404003. The next prime is 51456404033. The reversal of 51456404007 is 70040465415.

51456404007 is a `hidden beast` number, since 5 + 1 + 4 + 5 + 640 + 4 + 0 + 0 + 7 = 666.

It is not a de Polignac number, because 51456404007 - 2² = 51456404003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51456404003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105877132 + ... + 105877617.

Almost surely, 2^51456404007 is an apocalyptic number.

51456404007 is a deficient number, since it is larger than the sum of its proper divisors (25622324993).

51456404007 is an equidigital number, since it uses as much as digits as its factorization.

51456404007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211754764 (or 211754752 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The spelling of 51456404007 in words is "fifty-one billion, four hundred fifty-six million, four hundred four thousand, seven".