51013320090000 has 100 divisors (see below), whose sum is σ = 164677799123376. Its totient is φ = 13603552016000.

The previous prime is 51013320089993. The next prime is 51013320090001. The reversal of 51013320090000 is 9002331015.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (51013320090001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 850192002 + ... + 850252001.

Almost surely, 2^{51013320090000} is an apocalyptic number.

51013320090000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51013320090000 is an abundant number, since it is smaller than the sum of its proper divisors (113664479033376).

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

51013320090000 is a wasteful number, since it uses less digits than its factorization.

51013320090000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700444034 (or 1700444013 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 24.

The spelling of 51013320090000 in words is "fifty-one trillion, thirteen billion, three hundred twenty million, ninety thousand".