51512490732 has 12 divisors (see below), whose sum is σ = 120195811736. Its totient is φ = 17170830240.

The previous prime is 51512490691. The next prime is 51512490739. The reversal of 51512490732 is 23709421515.

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

It is not an unprimeable number, because it can be changed into a prime (51512490739) 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, 2146353769 + ... + 2146353792.

Almost surely, 2^51512490732 is an apocalyptic number.

It is an amenable number.

51512490732 is an abundant number, since it is smaller than the sum of its proper divisors (68683321004).

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

51512490732 is a wasteful number, since it uses less digits than its factorization.

51512490732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4292707568 (or 4292707566 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 39.

The spelling of 51512490732 in words is "fifty-one billion, five hundred twelve million, four hundred ninety thousand, seven hundred thirty-two".