56712645009 has 12 divisors (see below), whose sum is σ = 81920915076. Its totient is φ = 37807206912.

The previous prime is 56712644983. The next prime is 56712645029. The reversal of 56712645009 is 90054621765.

56712645009 is a `hidden beast` number, since 56 + 71 + 26 + 4 + 500 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 900000000 + 55812645009 = 30000^2 + 236247^2 .

It is not a de Polignac number, because 56712645009 - 2¹³ = 56712636817 is a prime.

It is a super-2 number, since 2×56712645009² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56712645029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 259009 + ... + 424865.

It is an arithmetic number, because the mean of its divisors is an integer number (6826742923).

Almost surely, 2^56712645009 is an apocalyptic number.

It is an amenable number.

56712645009 is a deficient number, since it is larger than the sum of its proper divisors (25208270067).

56712645009 is a wasteful number, since it uses less digits than its factorization.

56712645009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203856 (or 203853 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 56712645009 in words is "fifty-six billion, seven hundred twelve million, six hundred forty-five thousand, nine".