56547151965 has 24 divisors (see below), whose sum is σ = 98020593528. Its totient is φ = 30156779520.

The previous prime is 56547151961. The next prime is 56547152029. The reversal of 56547151965 is 56915174565.

It is a happy number.

56547151965 is a `hidden beast` number, since 5 + 6 + 54 + 71 + 519 + 6 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 402323364 + 56144828601 = 20058^2 + 236949^2 .

It is not a de Polignac number, because 56547151965 - 2² = 56547151961 is a prime.

It is a super-2 number, since 2×56547151965² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56547151961) 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 23 ways as a sum of consecutive naturals, for example, 1569837 + ... + 1605453.

It is an arithmetic number, because the mean of its divisors is an integer number (4084191397).

Almost surely, 2^56547151965 is an apocalyptic number.

It is an amenable number.

56547151965 is a deficient number, since it is larger than the sum of its proper divisors (41473441563).

56547151965 is a wasteful number, since it uses less digits than its factorization.

56547151965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70909 (or 70906 counting only the distinct ones).

The product of its digits is 5670000, while the sum is 54.

The spelling of 56547151965 in words is "fifty-six billion, five hundred forty-seven million, one hundred fifty-one thousand, nine hundred sixty-five".