6939366639408 has 60 divisors (see below), whose sum is σ = 22194958381648. Its totient is φ = 1982676182400.

The previous prime is 6939366639389. The next prime is 6939366639419. The reversal of 6939366639408 is 8049366639396.

It is a super-2 number, since 2×6939366639408² (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 an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3442145143 + ... + 3442147158.

Almost surely, 2^{6939366639408} is an apocalyptic number.

It is an amenable number.

6939366639408 is an abundant number, since it is smaller than the sum of its proper divisors (15255591742240).

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

6939366639408 is a wasteful number, since it uses less digits than its factorization.

6939366639408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6884292322 (or 6884292313 counting only the distinct ones).

The product of its (nonzero) digits is 816293376, while the sum is 72.

The spelling of 6939366639408 in words is "six trillion, nine hundred thirty-nine billion, three hundred sixty-six million, six hundred thirty-nine thousand, four hundred eight".