2639344396968 has 96 divisors (see below), whose sum is σ = 7735276785600. Its totient is φ = 841530083328.

The previous prime is 2639344396961. The next prime is 2639344396979. The reversal of 2639344396968 is 8696934439362.

It is a happy number.

2639344396968 is a `hidden beast` number, since 2 + 6 + 3 + 9 + 3 + 443 + 96 + 96 + 8 = 666.

It is a super-2 number, since 2×2639344396968² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

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 = 2639344396896 and 2639344396905.

It is not an unprimeable number, because it can be changed into a prime (2639344396961) 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, 29470233 + ... + 29559656.

It is an arithmetic number, because the mean of its divisors is an integer number (80575799850).

Almost surely, 2^{2639344396968} is an apocalyptic number.

It is an amenable number.

2639344396968 is an abundant number, since it is smaller than the sum of its proper divisors (5095932388632).

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

2639344396968 is a wasteful number, since it uses less digits than its factorization.

2639344396968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59029933 (or 59029917 counting only the distinct ones).

The product of its digits is 1088391168, while the sum is 72.

The spelling of 2639344396968 in words is "two trillion, six hundred thirty-nine billion, three hundred forty-four million, three hundred ninety-six thousand, nine hundred sixty-eight".