51944672736 has 720 divisors, whose sum is σ = 184927881600. Its totient is φ = 14226347520.

The previous prime is 51944672729. The next prime is 51944672743. The reversal of 51944672736 is 63727644915.

51944672736 is a `hidden beast` number, since 519 + 44 + 67 + 27 + 3 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (51944672729) and next prime (51944672743).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 137056995 + ... + 137057373.

It is an arithmetic number, because the mean of its divisors is an integer number (256844280).

Almost surely, 2^51944672736 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 51944672736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92463940800).

51944672736 is an abundant number, since it is smaller than the sum of its proper divisors (132983208864).

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

51944672736 is a wasteful number, since it uses less digits than its factorization.

51944672736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465 (or 437 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 54.

The spelling of 51944672736 in words is "fifty-one billion, nine hundred forty-four million, six hundred seventy-two thousand, seven hundred thirty-six".