51245934336 has 360 divisors, whose sum is σ = 163233840000. Its totient is φ = 15955107840.

The previous prime is 51245934293. The next prime is 51245934353. The reversal of 51245934336 is 63343954215.

51245934336 is a `hidden beast` number, since 5 + 1 + 24 + 593 + 4 + 3 + 36 = 666.

It is a super-2 number, since 2×51245934336² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51245934291 and 51245934300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 18640290 + ... + 18643038.

Almost surely, 2^51245934336 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 51245934336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81616920000).

51245934336 is an abundant number, since it is smaller than the sum of its proper divisors (111987905664).

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

51245934336 is a wasteful number, since it uses less digits than its factorization.

51245934336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2837 (or 2814 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 45.

The spelling of 51245934336 in words is "fifty-one billion, two hundred forty-five million, nine hundred thirty-four thousand, three hundred thirty-six".