51212544544 has 48 divisors (see below), whose sum is σ = 117907973568. Its totient is φ = 21437805312.

The previous prime is 51212544527. The next prime is 51212544601. The reversal of 51212544544 is 44544521215.

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, 2648827 + ... + 2668090.

It is an arithmetic number, because the mean of its divisors is an integer number (2456416116).

Almost surely, 2^51212544544 is an apocalyptic number.

It is an amenable number.

51212544544 is an abundant number, since it is smaller than the sum of its proper divisors (66695429024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51212544544 is a wasteful number, since it uses less digits than its factorization.

51212544544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5316977 (or 5316969 counting only the distinct ones).

The product of its digits is 128000, while the sum is 37.

The spelling of 51212544544 in words is "fifty-one billion, two hundred twelve million, five hundred forty-four thousand, five hundred forty-four".