51023034320 has 80 divisors (see below), whose sum is σ = 125707610448. Its totient is φ = 19193241600.

The previous prime is 51023034253. The next prime is 51023034329. The reversal of 51023034320 is 2343032015.

It can be written as a sum of positive squares in 8 ways, for example, as 2589588544 + 48433445776 = 50888^2 + 220076^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51023034329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1754942 + ... + 1783778.

Almost surely, 2^51023034320 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 51023034320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62853805224).

51023034320 is an abundant number, since it is smaller than the sum of its proper divisors (74684576128).

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

51023034320 is a wasteful number, since it uses less digits than its factorization.

51023034320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30168 (or 30162 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 51023034320 its reverse (2343032015), we get a palindrome (53366066335).

The spelling of 51023034320 in words is "fifty-one billion, twenty-three million, thirty-four thousand, three hundred twenty".