6990712496639 has 8 divisors (see below), whose sum is σ = 7365478428672. Its totient is φ = 6621848390520.

The previous prime is 6990712496527. The next prime is 6990712496653. The reversal of 6990712496639 is 9366942170996.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6990712496639 is a prime.

It is a super-2 number, since 2×6990712496639² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6990712496699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1475454047 + ... + 1475458784.

It is an arithmetic number, because the mean of its divisors is an integer number (920684803584).

Almost surely, 2^{6990712496639} is an apocalyptic number.

6990712496639 is a deficient number, since it is larger than the sum of its proper divisors (374765932033).

6990712496639 is a wasteful number, since it uses less digits than its factorization.

6990712496639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2950912957.

The product of its (nonzero) digits is 238085568, while the sum is 71.

The spelling of 6990712496639 in words is "six trillion, nine hundred ninety billion, seven hundred twelve million, four hundred ninety-six thousand, six hundred thirty-nine".