656655550101 has 24 divisors (see below), whose sum is σ = 969047698944. Its totient is φ = 428294956320.

The previous prime is 656655550093. The next prime is 656655550127. The reversal of 656655550101 is 101055556656.

It is not a de Polignac number, because 656655550101 - 2³ = 656655550093 is a prime.

It is a super-2 number, since 2×656655550101² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656655550601) 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 23 ways as a sum of consecutive naturals, for example, 839235 + ... + 1420431.

It is an arithmetic number, because the mean of its divisors is an integer number (40376987456).

Almost surely, 2^656655550101 is an apocalyptic number.

It is an amenable number.

656655550101 is a deficient number, since it is larger than the sum of its proper divisors (312392148843).

656655550101 is a wasteful number, since it uses less digits than its factorization.

656655550101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583921 (or 583918 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 45.

The spelling of 656655550101 in words is "six hundred fifty-six billion, six hundred fifty-five million, five hundred fifty thousand, one hundred one".