51500111552 has 28 divisors (see below), whose sum is σ = 102572673696. Its totient is φ = 25655028480.

The previous prime is 51500111539. The next prime is 51500111557. The reversal of 51500111552 is 25511100515.

It is a super-2 number, since 2×51500111552² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51500111557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1467323 + ... + 1502010.

Almost surely, 2^51500111552 is an apocalyptic number.

It is an amenable number.

51500111552 is a deficient number, since it is larger than the sum of its proper divisors (51072562144).

51500111552 is a wasteful number, since it uses less digits than its factorization.

51500111552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2969616 (or 2969606 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 26.

The spelling of 51500111552 in words is "fifty-one billion, five hundred million, one hundred eleven thousand, five hundred fifty-two".