51439602652 has 12 divisors (see below), whose sum is σ = 94757162920. Its totient is φ = 24366127536.

The previous prime is 51439602637. The next prime is 51439602653. The reversal of 51439602652 is 25620693415.

It is a junction number, because it is equal to n+sod(n) for n = 51439602599 and 51439602608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51439602653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338418363 + ... + 338418514.

Almost surely, 2^51439602652 is an apocalyptic number.

It is an amenable number.

51439602652 is a deficient number, since it is larger than the sum of its proper divisors (43317560268).

51439602652 is a wasteful number, since it uses less digits than its factorization.

51439602652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676836900 (or 676836898 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 51439602652 in words is "fifty-one billion, four hundred thirty-nine million, six hundred two thousand, six hundred fifty-two".