51890336910 has 128 divisors (see below), whose sum is σ = 140042649600. Its totient is φ = 13671504000.

The previous prime is 51890336891. The next prime is 51890336917. The reversal of 51890336910 is 1963309815.

51890336910 is a `hidden beast` number, since 518 + 90 + 3 + 36 + 9 + 10 = 666.

51890336910 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51890336917) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8603776 + ... + 8609804.

It is an arithmetic number, because the mean of its divisors is an integer number (1094083200).

Almost surely, 2^51890336910 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51890336910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70021324800).

51890336910 is an abundant number, since it is smaller than the sum of its proper divisors (88152312690).

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

51890336910 is a wasteful number, since it uses less digits than its factorization.

51890336910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6423 (or 6417 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The spelling of 51890336910 in words is "fifty-one billion, eight hundred ninety million, three hundred thirty-six thousand, nine hundred ten".