56136916728 has 32 divisors (see below), whose sum is σ = 155935880400. Its totient is φ = 18712305504.

The previous prime is 56136916723. The next prime is 56136916733. The reversal of 56136916728 is 82761963165.

56136916728 is a `hidden beast` number, since 5 + 613 + 6 + 9 + 16 + 7 + 2 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (56136916723) and next prime (56136916733).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56136916723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129946351 + ... + 129946782.

Almost surely, 2^56136916728 is an apocalyptic number.

It is an amenable number.

56136916728 is an abundant number, since it is smaller than the sum of its proper divisors (99798963672).

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

56136916728 is a wasteful number, since it uses less digits than its factorization.

56136916728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259893148 (or 259893138 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The spelling of 56136916728 in words is "fifty-six billion, one hundred thirty-six million, nine hundred sixteen thousand, seven hundred twenty-eight".