51310400124 has 12 divisors (see below), whose sum is σ = 119724266984. Its totient is φ = 17103466704.

The previous prime is 51310400111. The next prime is 51310400243. The reversal of 51310400124 is 42100401315.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 51310400124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2137933327 + ... + 2137933350.

Almost surely, 2^51310400124 is an apocalyptic number.

It is an amenable number.

51310400124 is an abundant number, since it is smaller than the sum of its proper divisors (68413866860).

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

51310400124 is a wasteful number, since it uses less digits than its factorization.

51310400124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4275866684 (or 4275866682 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 51310400124 its reverse (42100401315), we get a palindrome (93410801439).

The spelling of 51310400124 in words is "fifty-one billion, three hundred ten million, four hundred thousand, one hundred twenty-four".