51192716481 has 48 divisors (see below), whose sum is σ = 82307796480. Its totient is φ = 30525984000.

The previous prime is 51192716467. The next prime is 51192716489. The reversal of 51192716481 is 18461729115.

51192716481 is a `hidden beast` number, since 5 + 11 + 92 + 71 + 6 + 481 = 666.

It is not a de Polignac number, because 51192716481 - 2⁷ = 51192716353 is a prime.

It is a super-2 number, since 2×51192716481² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (51192716489) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 99571 + ... + 335111.

It is an arithmetic number, because the mean of its divisors is an integer number (1714745760).

Almost surely, 2^51192716481 is an apocalyptic number.

It is an amenable number.

51192716481 is a deficient number, since it is larger than the sum of its proper divisors (31115079999).

51192716481 is a wasteful number, since it uses less digits than its factorization.

51192716481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235638 (or 235635 counting only the distinct ones).

The product of its digits is 120960, while the sum is 45.

The spelling of 51192716481 in words is "fifty-one billion, one hundred ninety-two million, seven hundred sixteen thousand, four hundred eighty-one".