656414403459442 has 4 divisors (see below), whose sum is σ = 984621605189166. Its totient is φ = 328207201729720.

The previous prime is 656414403459403. The next prime is 656414403459443. The reversal of 656414403459442 is 244954304414656.

It is a happy number.

656414403459442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 542158207372681 + 114256196086761 = 23284291^2 + 10689069^2 .

It is not an unprimeable number, because it can be changed into a prime (656414403459443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164103600864859 + ... + 164103600864862.

Almost surely, 2^{656414403459442} is an apocalyptic number.

656414403459442 is a deficient number, since it is larger than the sum of its proper divisors (328207201729724).

656414403459442 is a wasteful number, since it uses less digits than its factorization.

656414403459442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328207201729723.

The product of its (nonzero) digits is 199065600, while the sum is 61.

The spelling of 656414403459442 in words is "six hundred fifty-six trillion, four hundred fourteen billion, four hundred three million, four hundred fifty-nine thousand, four hundred forty-two".