6990712496640 has 240 divisors, whose sum is σ = 24219664717248. Its totient is φ = 1863507714048.

The previous prime is 6990712496527. The next prime is 6990712496653. The reversal of 6990712496640 is 466942170996.

6990712496640 is a `hidden beast` number, since 6 + 9 + 90 + 7 + 12 + 496 + 6 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×6990712496640² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64526997 + ... + 64635243.

Almost surely, 2^{6990712496640} is an apocalyptic number.

6990712496640 is a gapful number since it is divisible by the number (60) 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 6990712496640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12109832358624).

6990712496640 is an abundant number, since it is smaller than the sum of its proper divisors (17228952220608).

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

6990712496640 is a wasteful number, since it uses less digits than its factorization.

6990712496640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111079 (or 111060 counting only the distinct ones).

The product of its (nonzero) digits is 35271936, while the sum is 63.

The spelling of 6990712496640 in words is "six trillion, nine hundred ninety billion, seven hundred twelve million, four hundred ninety-six thousand, six hundred forty".