656494903701 has 48 divisors (see below), whose sum is σ = 1203604878720. Its totient is φ = 346283009280.

The previous prime is 656494903657. The next prime is 656494903711. The reversal of 656494903701 is 107309494656.

656494903701 is a `hidden beast` number, since 6 + 564 + 9 + 4 + 9 + 0 + 3 + 70 + 1 = 666.

It is not a de Polignac number, because 656494903701 - 2¹⁷ = 656494772629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656494903711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10244740 + ... + 10308621.

It is an arithmetic number, because the mean of its divisors is an integer number (25075101640).

Almost surely, 2^656494903701 is an apocalyptic number.

It is an amenable number.

656494903701 is a deficient number, since it is larger than the sum of its proper divisors (547109975019).

656494903701 is a wasteful number, since it uses less digits than its factorization.

656494903701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20553403 (or 20553384 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 54.

The spelling of 656494903701 in words is "six hundred fifty-six billion, four hundred ninety-four million, nine hundred three thousand, seven hundred one".