51260505144 has 128 divisors (see below), whose sum is σ = 137212807680. Its totient is φ = 15902208000.

The previous prime is 51260505113. The next prime is 51260505187. The reversal of 51260505144 is 44150506215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14352879 + ... + 14356449.

It is an arithmetic number, because the mean of its divisors is an integer number (1071975060).

Almost surely, 2^51260505144 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 51260505144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68606403840).

51260505144 is an abundant number, since it is smaller than the sum of its proper divisors (85952302536).

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

51260505144 is a wasteful number, since it uses less digits than its factorization.

51260505144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3981 (or 3977 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

The spelling of 51260505144 in words is "fifty-one billion, two hundred sixty million, five hundred five thousand, one hundred forty-four".