51357235400 has 24 divisors (see below), whose sum is σ = 119405572770. Its totient is φ = 20542894080.

The previous prime is 51357235387. The next prime is 51357235453. The reversal of 51357235400 is 453275315.

It can be written as a sum of positive squares in 3 ways, for example, as 30662111236 + 20695124164 = 175106^2 + 143858^2 .

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 5 ways as a sum of consecutive naturals, for example, 128392889 + ... + 128393288.

Almost surely, 2^51357235400 is an apocalyptic number.

51357235400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51357235400 is an abundant number, since it is smaller than the sum of its proper divisors (68048337370).

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

51357235400 is a wasteful number, since it uses less digits than its factorization.

51357235400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256786193 (or 256786184 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 35.

The spelling of 51357235400 in words is "fifty-one billion, three hundred fifty-seven million, two hundred thirty-five thousand, four hundred".