51519839676 has 12 divisors (see below), whose sum is σ = 120212959272. Its totient is φ = 17173279888.

The previous prime is 51519839669. The next prime is 51519839681. The reversal of 51519839676 is 67693891515.

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

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, 2146659975 + ... + 2146659998.

It is an arithmetic number, because the mean of its divisors is an integer number (10017746606).

Almost surely, 2^51519839676 is an apocalyptic number.

It is an amenable number.

51519839676 is an abundant number, since it is smaller than the sum of its proper divisors (68693119596).

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

51519839676 is a wasteful number, since it uses less digits than its factorization.

51519839676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4293319980 (or 4293319978 counting only the distinct ones).

The product of its digits is 12247200, while the sum is 60.

The spelling of 51519839676 in words is "fifty-one billion, five hundred nineteen million, eight hundred thirty-nine thousand, six hundred seventy-six".