51212555364 has 24 divisors (see below), whose sum is σ = 119586049408. Its totient is φ = 17057982240.

The previous prime is 51212555357. The next prime is 51212555393. The reversal of 51212555364 is 46355521215.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

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, 1592107 + ... + 1623954.

Almost surely, 2^51212555364 is an apocalyptic number.

It is an amenable number.

51212555364 is an abundant number, since it is smaller than the sum of its proper divisors (68373494044).

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

51212555364 is a wasteful number, since it uses less digits than its factorization.

51212555364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3217395 (or 3217393 counting only the distinct ones).

The product of its digits is 180000, while the sum is 39.

The spelling of 51212555364 in words is "fifty-one billion, two hundred twelve million, five hundred fifty-five thousand, three hundred sixty-four".