656336439149 has 2 divisors, whose sum is σ = 656336439150. Its totient is φ = 656336439148.

The previous prime is 656336439131. The next prime is 656336439163. The reversal of 656336439149 is 941934633656.

656336439149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 543065824900 + 113270614249 = 736930^2 + 336557^2 .

It is a cyclic number.

It is not a de Polignac number, because 656336439149 - 2⁸ = 656336438893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (656336439179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328168219574 + 328168219575.

It is an arithmetic number, because the mean of its divisors is an integer number (328168219575).

Almost surely, 2^656336439149 is an apocalyptic number.

It is an amenable number.

656336439149 is a deficient number, since it is larger than the sum of its proper divisors (1).

656336439149 is an equidigital number, since it uses as much as digits as its factorization.

656336439149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37791360, while the sum is 59.

The spelling of 656336439149 in words is "six hundred fifty-six billion, three hundred thirty-six million, four hundred thirty-nine thousand, one hundred forty-nine".