656011560551 has 4 divisors (see below), whose sum is σ = 656076657600. Its totient is φ = 655946463504.

The previous prime is 656011560521. The next prime is 656011560553. The reversal of 656011560551 is 155065110656.

656011560551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 656011560551 - 2¹⁰ = 656011559527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 656011560499 and 656011560508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656011560553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32533406 + ... + 32553563.

It is an arithmetic number, because the mean of its divisors is an integer number (164019164400).

Almost surely, 2^656011560551 is an apocalyptic number.

656011560551 is a deficient number, since it is larger than the sum of its proper divisors (65097049).

656011560551 is a wasteful number, since it uses less digits than its factorization.

656011560551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65097048.

The product of its (nonzero) digits is 135000, while the sum is 41.

The spelling of 656011560551 in words is "six hundred fifty-six billion, eleven million, five hundred sixty thousand, five hundred fifty-one".