656434436494 has 16 divisors (see below), whose sum is σ = 1043830011600. Its totient is φ = 308537679744.

The previous prime is 656434436491. The next prime is 656434436503. The reversal of 656434436494 is 494634434656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656434436491) 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, 11616504 + ... + 11672875.

It is an arithmetic number, because the mean of its divisors is an integer number (65239375725).

Almost surely, 2^656434436494 is an apocalyptic number.

656434436494 is a deficient number, since it is larger than the sum of its proper divisors (387395575106).

656434436494 is a wasteful number, since it uses less digits than its factorization.

656434436494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23290227.

The product of its digits is 89579520, while the sum is 58.

The spelling of 656434436494 in words is "six hundred fifty-six billion, four hundred thirty-four million, four hundred thirty-six thousand, four hundred ninety-four".