656378222313 has 32 divisors (see below), whose sum is σ = 1009408458240. Its totient is φ = 375207586560.

The previous prime is 656378222267. The next prime is 656378222321. The reversal of 656378222313 is 313222873656.

656378222313 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 656378222313 - 2⁶ = 656378222249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (656378222813) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2163520 + ... + 2448177.

It is an arithmetic number, because the mean of its divisors is an integer number (31544014320).

Almost surely, 2^656378222313 is an apocalyptic number.

It is an amenable number.

656378222313 is a deficient number, since it is larger than the sum of its proper divisors (353030235927).

656378222313 is a wasteful number, since it uses less digits than its factorization.

656378222313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4611957.

The product of its digits is 2177280, while the sum is 48.

The spelling of 656378222313 in words is "six hundred fifty-six billion, three hundred seventy-eight million, two hundred twenty-two thousand, three hundred thirteen".