51013125900 has 108 divisors (see below), whose sum is σ = 174434007384. Its totient is φ = 12366816000.

The previous prime is 51013125893. The next prime is 51013125959. The reversal of 51013125900 is 952131015.

51013125900 is a `hidden beast` number, since 51 + 0 + 13 + 12 + 590 + 0 = 666.

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 35 ways as a sum of consecutive naturals, for example, 2566521 + ... + 2586320.

It is an arithmetic number, because the mean of its divisors is an integer number (1615129698).

Almost surely, 2^51013125900 is an apocalyptic number.

51013125900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51013125900 is an abundant number, since it is smaller than the sum of its proper divisors (123420881484).

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

51013125900 is a wasteful number, since it uses less digits than its factorization.

51013125900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5152872 (or 5152862 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 27.

Adding to 51013125900 its reverse (952131015), we get a palindrome (51965256915).

The spelling of 51013125900 in words is "fifty-one billion, thirteen million, one hundred twenty-five thousand, nine hundred".