51013620052 has 24 divisors (see below), whose sum is σ = 91163761920. Its totient is φ = 24970419840.

The previous prime is 51013620041. The next prime is 51013620083. The reversal of 51013620052 is 25002631015.

It is a junction number, because it is equal to n+sod(n) for n = 51013619999 and 51013620026.

It is a congruent number.

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, 391588 + ... + 505339.

It is an arithmetic number, because the mean of its divisors is an integer number (3798490080).

Almost surely, 2^51013620052 is an apocalyptic number.

It is an amenable number.

51013620052 is a deficient number, since it is larger than the sum of its proper divisors (40150141868).

51013620052 is a wasteful number, since it uses less digits than its factorization.

51013620052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897231 (or 897229 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The spelling of 51013620052 in words is "fifty-one billion, thirteen million, six hundred twenty thousand, fifty-two".