51335512100 has 36 divisors (see below), whose sum is σ = 111692070000. Its totient is φ = 20480009760.

The previous prime is 51335512099. The next prime is 51335512169. The reversal of 51335512100 is 121553315.

It is a happy number.

51335512100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 51335512100.

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, 639350 + ... + 715149.

It is an arithmetic number, because the mean of its divisors is an integer number (3102557500).

Almost surely, 2^51335512100 is an apocalyptic number.

51335512100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51335512100 is an abundant number, since it is smaller than the sum of its proper divisors (60356557900).

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

51335512100 is a wasteful number, since it uses less digits than its factorization.

51335512100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354892 (or 1354885 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 26.

The spelling of 51335512100 in words is "fifty-one billion, three hundred thirty-five million, five hundred twelve thousand, one hundred".