664426602101361 has 32 divisors (see below), whose sum is σ = 990041735886336. Its totient is φ = 392848810704000.

The previous prime is 664426602101359. The next prime is 664426602101419. The reversal of 664426602101361 is 163101206624466.

It is not a de Polignac number, because 664426602101361 - 2¹ = 664426602101359 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 664426602101361.

It is not an unprimeable number, because it can be changed into a prime (664426602103361) 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, 35027766 + ... + 50554896.

It is an arithmetic number, because the mean of its divisors is an integer number (30938804246448).

Almost surely, 2^{664426602101361} is an apocalyptic number.

It is an amenable number.

664426602101361 is a deficient number, since it is larger than the sum of its proper divisors (325615133784975).

664426602101361 is a wasteful number, since it uses less digits than its factorization.

664426602101361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15558813.

The product of its (nonzero) digits is 1492992, while the sum is 48.

The spelling of 664426602101361 in words is "six hundred sixty-four trillion, four hundred twenty-six billion, six hundred two million, one hundred one thousand, three hundred sixty-one".