51900326208 has 140 divisors (see below), whose sum is σ = 154465641792. Its totient is φ = 17230752000.

The previous prime is 51900326207. The next prime is 51900326279. The reversal of 51900326208 is 80262300915.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51900326207) 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, 1281241 + ... + 1321127.

Almost surely, 2^51900326208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51900326208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77232820896).

51900326208 is an abundant number, since it is smaller than the sum of its proper divisors (102565315584).

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

51900326208 is a wasteful number, since it uses less digits than its factorization.

51900326208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40162 (or 40143 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 51900326208 in words is "fifty-one billion, nine hundred million, three hundred twenty-six thousand, two hundred eight".