2639113344 has 192 divisors, whose sum is σ = 8857680000. Its totient is φ = 753919488.

The previous prime is 2639113343. The next prime is 2639113391. The reversal of 2639113344 is 4433119362.

2639113344 is a `hidden beast` number, since 2 + 639 + 1 + 13 + 3 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 2639113299 and 2639113308.

It is not an unprimeable number, because it can be changed into a prime (2639113343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 391797 + ... + 398475.

It is an arithmetic number, because the mean of its divisors is an integer number (46133750).

Almost surely, 2^2639113344 is an apocalyptic number.

2639113344 is a gapful number since it is divisible by the number (24) 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 2639113344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4428840000).

2639113344 is an abundant number, since it is smaller than the sum of its proper divisors (6218566656).

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

2639113344 is an equidigital number, since it uses as much as digits as its factorization.

2639113344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6720 (or 6691 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 2639113344 is about 51372.3013305809. The cubic root of 2639113344 is about 1381.9299022070.

The spelling of 2639113344 in words is "two billion, six hundred thirty-nine million, one hundred thirteen thousand, three hundred forty-four".