6401803056 has 80 divisors (see below), whose sum is σ = 18623474688. Its totient is φ = 1877356800.

The previous prime is 6401803039. The next prime is 6401803069. The reversal of 6401803056 is 6503081046.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179191 + ... + 211926.

Almost surely, 2^6401803056 is an apocalyptic number.

6401803056 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

6401803056 is an abundant number, since it is smaller than the sum of its proper divisors (12221671632).

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

6401803056 is a wasteful number, since it uses less digits than its factorization.

6401803056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391170 (or 391164 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 6401803056 is about 80011.2683064079. The cubic root of 6401803056 is about 1856.8098721699.

The spelling of 6401803056 in words is "six billion, four hundred one million, eight hundred three thousand, fifty-six".