56577556465 has 16 divisors (see below), whose sum is σ = 69157762560. Its totient is φ = 44421448320.

The previous prime is 56577556463. The next prime is 56577556493. The reversal of 56577556465 is 56465577565.

It is not a de Polignac number, because 56577556465 - 2¹ = 56577556463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56577556463) 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, 21085 + ... + 337045.

It is an arithmetic number, because the mean of its divisors is an integer number (4322360160).

Almost surely, 2^56577556465 is an apocalyptic number.

It is an amenable number.

56577556465 is a deficient number, since it is larger than the sum of its proper divisors (12580206095).

56577556465 is a wasteful number, since it uses less digits than its factorization.

56577556465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316632.

The product of its digits is 132300000, while the sum is 61.

The spelling of 56577556465 in words is "fifty-six billion, five hundred seventy-seven million, five hundred fifty-six thousand, four hundred sixty-five".