6356980440 has 160 divisors (see below), whose sum is σ = 21499386480. Its totient is φ = 1684654848.

The previous prime is 6356980411. The next prime is 6356980451. The reversal of 6356980440 is 440896536.

6356980440 is a `hidden beast` number, since 6 + 3 + 569 + 80 + 4 + 4 + 0 = 666.

It is a super-2 number, since 2×6356980440² = 80822400629085187200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 522102 + ... + 534138.

Almost surely, 2^6356980440 is an apocalyptic number.

6356980440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6356980440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10749693240).

6356980440 is an abundant number, since it is smaller than the sum of its proper divisors (15142406040).

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

6356980440 is a wasteful number, since it uses less digits than its factorization.

6356980440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12223 (or 12210 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 6356980440 is about 79730.6743982515. The cubic root of 6356980440 is about 1852.4661961738.

The spelling of 6356980440 in words is "six billion, three hundred fifty-six million, nine hundred eighty thousand, four hundred forty".