51544926720 has 1440 divisors, whose sum is σ = 229232203200. Its totient is φ = 11036196864.

The previous prime is 51544926707. The next prime is 51544926767. The reversal of 51544926720 is 2762944515.

51544926720 is a `hidden beast` number, since 5 + 154 + 492 + 6 + 7 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1440).

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

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 579156436 + ... + 579156524.

It is an arithmetic number, because the mean of its divisors is an integer number (159189030).

Almost surely, 2^51544926720 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 51544926720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114616101600).

51544926720 is an abundant number, since it is smaller than the sum of its proper divisors (177687276480).

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

51544926720 is an equidigital number, since it uses as much as digits as its factorization.

51544926720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 51544926720 in words is "fifty-one billion, five hundred forty-four million, nine hundred twenty-six thousand, seven hundred twenty".