656266398122 has 8 divisors (see below), whose sum is σ = 986420953056. Its totient is φ = 327459413772.

The previous prime is 656266398119. The next prime is 656266398127. The reversal of 656266398122 is 221893662656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×656266398122³ (a number of 36 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (656266398127) 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 3 ways as a sum of consecutive naturals, for example, 336891428 + ... + 336893375.

It is an arithmetic number, because the mean of its divisors is an integer number (123302619132).

Almost surely, 2^656266398122 is an apocalyptic number.

656266398122 is a deficient number, since it is larger than the sum of its proper divisors (330154554934).

656266398122 is a wasteful number, since it uses less digits than its factorization.

656266398122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673785292.

The product of its digits is 11197440, while the sum is 56.

The spelling of 656266398122 in words is "six hundred fifty-six billion, two hundred sixty-six million, three hundred ninety-eight thousand, one hundred twenty-two".