51103374520 has 64 divisors (see below), whose sum is σ = 125491667040. Its totient is φ = 18574732800.

The previous prime is 51103374503. The next prime is 51103374533. The reversal of 51103374520 is 2547330115.

It is a happy number.

It is a super-2 number, since 2×51103374520² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1005234 + ... + 1054846.

Almost surely, 2^51103374520 is an apocalyptic number.

It is an amenable number.

51103374520 is an abundant number, since it is smaller than the sum of its proper divisors (74388292520).

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

51103374520 is a wasteful number, since it uses less digits than its factorization.

51103374520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51976 (or 51972 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 31.

The spelling of 51103374520 in words is "fifty-one billion, one hundred three million, three hundred seventy-four thousand, five hundred twenty".