6394970666315 has 24 divisors (see below), whose sum is σ = 9738389471472. Its totient is φ = 3986475218880.

The previous prime is 6394970666311. The next prime is 6394970666353. The reversal of 6394970666315 is 5136660794936.

It is not a de Polignac number, because 6394970666315 - 2² = 6394970666311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6394970666311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1186448264 + ... + 1186453653.

It is an arithmetic number, because the mean of its divisors is an integer number (405766227978).

Almost surely, 2^{6394970666315} is an apocalyptic number.

6394970666315 is a deficient number, since it is larger than the sum of its proper divisors (3343418805157).

6394970666315 is a wasteful number, since it uses less digits than its factorization.

6394970666315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2372901947 (or 2372901940 counting only the distinct ones).

The product of its (nonzero) digits is 132269760, while the sum is 65.

The spelling of 6394970666315 in words is "six trillion, three hundred ninety-four billion, nine hundred seventy million, six hundred sixty-six thousand, three hundred fifteen".