656238650673 has 16 divisors (see below), whose sum is σ = 930298792896. Its totient is φ = 410049039360.

The previous prime is 656238650659. The next prime is 656238650737. The reversal of 656238650673 is 376056832656.

It is a happy number.

656238650673 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 656238650673 - 2²⁴ = 656221873457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (656238650633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26683611 + ... + 26708192.

It is an arithmetic number, because the mean of its divisors is an integer number (58143674556).

Almost surely, 2^656238650673 is an apocalyptic number.

It is an amenable number.

656238650673 is a deficient number, since it is larger than the sum of its proper divisors (274060142223).

656238650673 is a wasteful number, since it uses less digits than its factorization.

656238650673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53392064.

The product of its (nonzero) digits is 32659200, while the sum is 57.

The spelling of 656238650673 in words is "six hundred fifty-six billion, two hundred thirty-eight million, six hundred fifty thousand, six hundred seventy-three".