51511203532 has 48 divisors (see below), whose sum is σ = 95996759040. Its totient is φ = 24101425152.

The previous prime is 51511203517. The next prime is 51511203577. The reversal of 51511203532 is 23530211515.

It is a self number, because there is not a number n which added to its sum of digits gives 51511203532.

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, 8773894 + ... + 8779762.

It is an arithmetic number, because the mean of its divisors is an integer number (1999932480).

Almost surely, 2^51511203532 is an apocalyptic number.

It is an amenable number.

51511203532 is a deficient number, since it is larger than the sum of its proper divisors (44485555508).

51511203532 is a wasteful number, since it uses less digits than its factorization.

51511203532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6610 (or 6608 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The spelling of 51511203532 in words is "fifty-one billion, five hundred eleven million, two hundred three thousand, five hundred thirty-two".