56656353505 has 8 divisors (see below), whose sum is σ = 68180225832. Its totient is φ = 45196681728.

The previous prime is 56656353503. The next prime is 56656353511. The reversal of 56656353505 is 50535365665.

It can be written as a sum of positive squares in 4 ways, for example, as 1119303936 + 55537049569 = 33456^2 + 235663^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56656353505 - 2¹ = 56656353503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56656353503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16048194 + ... + 16051723.

It is an arithmetic number, because the mean of its divisors is an integer number (8522528229).

Almost surely, 2^56656353505 is an apocalyptic number.

It is an amenable number.

56656353505 is a deficient number, since it is larger than the sum of its proper divisors (11523872327).

56656353505 is a wasteful number, since it uses less digits than its factorization.

56656353505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32100275.

The product of its (nonzero) digits is 6075000, while the sum is 49.

The spelling of 56656353505 in words is "fifty-six billion, six hundred fifty-six million, three hundred fifty-three thousand, five hundred five".