51196743936 has 432 divisors, whose sum is σ = 164469200896. Its totient is φ = 15216574464.

The previous prime is 51196743929. The next prime is 51196743977. The reversal of 51196743936 is 63934769115.

51196743936 is a `hidden beast` number, since 5 + 119 + 67 + 439 + 36 = 666.

It is a super-2 number, since 2×51196743936² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 163567716 + ... + 163568028.

Almost surely, 2^51196743936 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 51196743936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82234600448).

51196743936 is an abundant number, since it is smaller than the sum of its proper divisors (113272456960).

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

51196743936 is a wasteful number, since it uses less digits than its factorization.

51196743936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518 (or 501 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 54.

The spelling of 51196743936 in words is "fifty-one billion, one hundred ninety-six million, seven hundred forty-three thousand, nine hundred thirty-six".