6637842432 has 468 divisors, whose sum is σ = 22570136680. Its totient is φ = 1934917632.

The previous prime is 6637842401. The next prime is 6637842467. The reversal of 6637842432 is 2342487366.

6637842432 is a `hidden beast` number, since 6 + 637 + 8 + 4 + 2 + 4 + 3 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (468).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 349360119 + ... + 349360137.

Almost surely, 2^6637842432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6637842432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11285068340).

6637842432 is an abundant number, since it is smaller than the sum of its proper divisors (15932294248).

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

6637842432 is an frugal number, since it uses more digits than its factorization.

6637842432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 37 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 45.

The square root of 6637842432 is about 81472.9552182809. The cubic root of 6637842432 is about 1879.3556747768.

The spelling of 6637842432 in words is "six billion, six hundred thirty-seven million, eight hundred forty-two thousand, four hundred thirty-two".