6400904717268 has 36 divisors (see below), whose sum is σ = 16779326360160. Its totient is φ = 2133634905432.

The previous prime is 6400904717239. The next prime is 6400904717281. The reversal of 6400904717268 is 8627174090046.

6400904717268 is a `hidden beast` number, since 6 + 40 + 0 + 9 + 0 + 471 + 72 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3292645488 + ... + 3292647431.

Almost surely, 2^{6400904717268} is an apocalyptic number.

It is an amenable number.

6400904717268 is an abundant number, since it is smaller than the sum of its proper divisors (10378421642892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6400904717268 is a wasteful number, since it uses less digits than its factorization.

6400904717268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6585292938 (or 6585292924 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The spelling of 6400904717268 in words is "six trillion, four hundred billion, nine hundred four million, seven hundred seventeen thousand, two hundred sixty-eight".