51138138300 has 36 divisors (see below), whose sum is σ = 147959681016. Its totient is φ = 13636836800.

The previous prime is 51138138283. The next prime is 51138138323. The reversal of 51138138300 is 383183115.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85229931 + ... + 85230530.

Almost surely, 2^51138138300 is an apocalyptic number.

51138138300 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51138138300 is an abundant number, since it is smaller than the sum of its proper divisors (96821542716).

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

51138138300 is a wasteful number, since it uses less digits than its factorization.

51138138300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170460478 (or 170460471 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The spelling of 51138138300 in words is "fifty-one billion, one hundred thirty-eight million, one hundred thirty-eight thousand, three hundred".