664455705231597 has 16 divisors (see below), whose sum is σ = 891400558645248. Its totient is φ = 440240809754160.

The previous prime is 664455705231587. The next prime is 664455705231607. The reversal of 664455705231597 is 795132507554466.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (664455705231587) and next prime (664455705231607).

It is not a de Polignac number, because 664455705231597 - 2⁴ = 664455705231581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664455705231547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 694413 + ... + 36460850.

It is an arithmetic number, because the mean of its divisors is an integer number (55712534915328).

Almost surely, 2^{664455705231597} is an apocalyptic number.

It is an amenable number.

664455705231597 is a deficient number, since it is larger than the sum of its proper divisors (226944853413651).

664455705231597 is a wasteful number, since it uses less digits than its factorization.

664455705231597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37192000.

The product of its (nonzero) digits is 952560000, while the sum is 69.

The spelling of 664455705231597 in words is "six hundred sixty-four trillion, four hundred fifty-five billion, seven hundred five million, two hundred thirty-one thousand, five hundred ninety-seven".