656555264464 has 20 divisors (see below), whose sum is σ = 1387719082080. Its totient is φ = 298434211040.

The previous prime is 656555264461. The next prime is 656555264467. The reversal of 656555264464 is 464462555656.

It is an interprime number because it is at equal distance from previous prime (656555264461) and next prime (656555264467).

It is a junction number, because it is equal to n+sod(n) for n = 656555264399 and 656555264408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656555264461) 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, 1865213644 + ... + 1865213995.

It is an arithmetic number, because the mean of its divisors is an integer number (69385954104).

Almost surely, 2^656555264464 is an apocalyptic number.

It is an amenable number.

656555264464 is an abundant number, since it is smaller than the sum of its proper divisors (731163817616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

656555264464 is a wasteful number, since it uses less digits than its factorization.

656555264464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3730427658 (or 3730427652 counting only the distinct ones).

The product of its digits is 103680000, while the sum is 58.

The spelling of 656555264464 in words is "six hundred fifty-six billion, five hundred fifty-five million, two hundred sixty-four thousand, four hundred sixty-four".