56164351509 has 16 divisors (see below), whose sum is σ = 95093082240. Its totient is φ = 32093915040.

The previous prime is 56164351459. The next prime is 56164351513. The reversal of 56164351509 is 90515346165.

56164351509 is a `hidden beast` number, since 5 + 61 + 6 + 435 + 150 + 9 = 666.

It is not a de Polignac number, because 56164351509 - 2¹² = 56164347413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56164301509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148582752 + ... + 148583129.

It is an arithmetic number, because the mean of its divisors is an integer number (5943317640).

Almost surely, 2^56164351509 is an apocalyptic number.

It is an amenable number.

56164351509 is a deficient number, since it is larger than the sum of its proper divisors (38928730731).

56164351509 is a wasteful number, since it uses less digits than its factorization.

56164351509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297165897 (or 297165891 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The spelling of 56164351509 in words is "fifty-six billion, one hundred sixty-four million, three hundred fifty-one thousand, five hundred nine".