51749432592 has 80 divisors (see below), whose sum is σ = 157057739328. Its totient is φ = 14475363840.

The previous prime is 51749432561. The next prime is 51749432621. The reversal of 51749432592 is 29523494715.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

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, 3762763 + ... + 3776490.

Almost surely, 2^51749432592 is an apocalyptic number.

51749432592 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51749432592 is an abundant number, since it is smaller than the sum of its proper divisors (105308306736).

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

51749432592 is a wasteful number, since it uses less digits than its factorization.

51749432592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7539288 (or 7539282 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 51.

The spelling of 51749432592 in words is "fifty-one billion, seven hundred forty-nine million, four hundred thirty-two thousand, five hundred ninety-two".