51352671653812 has 24 divisors (see below), whose sum is σ = 91380243229352. Its totient is φ = 25244397878400.

The previous prime is 51352671653807. The next prime is 51352671653819. The reversal of 51352671653812 is 21835617625315.

It can be written as a sum of positive squares in 4 ways, for example, as 733345598736 + 50619326055076 = 856356^2 + 7114726^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51352671653819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45332739 + ... + 46451722.

Almost surely, 2^{51352671653812} is an apocalyptic number.

It is an amenable number.

51352671653812 is a deficient number, since it is larger than the sum of its proper divisors (40027571575540).

51352671653812 is a wasteful number, since it uses less digits than its factorization.

51352671653812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91786819 (or 91786817 counting only the distinct ones).

The product of its digits is 9072000, while the sum is 55.

The spelling of 51352671653812 in words is "fifty-one trillion, three hundred fifty-two billion, six hundred seventy-one million, six hundred fifty-three thousand, eight hundred twelve".