6464400823552 has 36 divisors (see below), whose sum is σ = 14746914382816. Its totient is φ = 2770457495040.

The previous prime is 6464400823417. The next prime is 6464400823561. The reversal of 6464400823552 is 2553280044646.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 6464400823496 and 6464400823505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1803681474 + ... + 1803685057.

Almost surely, 2^{6464400823552} is an apocalyptic number.

It is an amenable number.

6464400823552 is an abundant number, since it is smaller than the sum of its proper divisors (8282513559264).

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

6464400823552 is an equidigital number, since it uses as much as digits as its factorization.

6464400823552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3607366554 (or 3607366540 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 49.

The spelling of 6464400823552 in words is "six trillion, four hundred sixty-four billion, four hundred million, eight hundred twenty-three thousand, five hundred fifty-two".