664391300415 has 8 divisors (see below), whose sum is σ = 1063026080688. Its totient is φ = 354342026880.

The previous prime is 664391300411. The next prime is 664391300431. The reversal of 664391300415 is 514003193466.

It is a happy number.

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

It is not a de Polignac number, because 664391300415 - 2² = 664391300411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664391300411) 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 7 ways as a sum of consecutive naturals, for example, 22146376666 + ... + 22146376695.

It is an arithmetic number, because the mean of its divisors is an integer number (132878260086).

Almost surely, 2^664391300415 is an apocalyptic number.

664391300415 is a deficient number, since it is larger than the sum of its proper divisors (398634780273).

664391300415 is a wasteful number, since it uses less digits than its factorization.

664391300415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44292753369.

The product of its (nonzero) digits is 233280, while the sum is 42.

The spelling of 664391300415 in words is "six hundred sixty-four billion, three hundred ninety-one million, three hundred thousand, four hundred fifteen".