51380772724064 has 96 divisors (see below), whose sum is σ = 116602068179520. Its totient is φ = 21831162789888.

The previous prime is 51380772724037. The next prime is 51380772724097. The reversal of 51380772724064 is 46042727708315.

51380772724064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22510454 + ... + 24687690.

It is an arithmetic number, because the mean of its divisors is an integer number (1214604876870).

Almost surely, 2^{51380772724064} 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 51380772724064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58301034089760).

51380772724064 is an abundant number, since it is smaller than the sum of its proper divisors (65221295455456).

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

51380772724064 is a wasteful number, since it uses less digits than its factorization.

51380772724064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178160 (or 2178152 counting only the distinct ones).

The product of its (nonzero) digits is 15805440, while the sum is 56.

The spelling of 51380772724064 in words is "fifty-one trillion, three hundred eighty billion, seven hundred seventy-two million, seven hundred twenty-four thousand, sixty-four".