51739889400 has 96 divisors (see below), whose sum is σ = 178215193200. Its totient is φ = 13797302400.

The previous prime is 51739889321. The next prime is 51739889423. The reversal of 51739889400 is 498893715.

51739889400 is a `hidden beast` number, since 5 + 1 + 73 + 98 + 89 + 400 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4785331 + ... + 4796130.

Almost surely, 2^51739889400 is an apocalyptic number.

51739889400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51739889400 is an abundant number, since it is smaller than the sum of its proper divisors (126475303800).

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

51739889400 is a wasteful number, since it uses less digits than its factorization.

51739889400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9581486 (or 9581471 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 51739889400 in words is "fifty-one billion, seven hundred thirty-nine million, eight hundred eighty-nine thousand, four hundred".