51575831448 has 32 divisors (see below), whose sum is σ = 129309054000. Its totient is φ = 17142680448.

The previous prime is 51575831423. The next prime is 51575831453. The reversal of 51575831448 is 84413857515.

It is a self number, because there is not a number n which added to its sum of digits gives 51575831448.

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, 3070411 + ... + 3087162.

Almost surely, 2^51575831448 is an apocalyptic number.

It is an amenable number.

51575831448 is an abundant number, since it is smaller than the sum of its proper divisors (77733222552).

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

51575831448 is a wasteful number, since it uses less digits than its factorization.

51575831448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6157931 (or 6157927 counting only the distinct ones).

The product of its digits is 2688000, while the sum is 51.

The spelling of 51575831448 in words is "fifty-one billion, five hundred seventy-five million, eight hundred thirty-one thousand, four hundred forty-eight".