6642267995790 has 240 divisors, whose sum is σ = 21869782822800. Its totient is φ = 1438325538048.

The previous prime is 6642267995747. The next prime is 6642267995849. The reversal of 6642267995790 is 975997622466.

6642267995790 is a `hidden beast` number, since 6 + 6 + 42 + 2 + 6 + 7 + 9 + 9 + 579 + 0 = 666.

It is a super-2 number, since 2×6642267995790² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 3649935 + ... + 5158154.

It is an arithmetic number, because the mean of its divisors is an integer number (91124095095).

Almost surely, 2^{6642267995790} is an apocalyptic number.

6642267995790 is an abundant number, since it is smaller than the sum of its proper divisors (15227514827010).

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

6642267995790 is a wasteful number, since it uses less digits than its factorization.

6642267995790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8808141 (or 8808125 counting only the distinct ones).

The product of its (nonzero) digits is 617258880, while the sum is 72.

The spelling of 6642267995790 in words is "six trillion, six hundred forty-two billion, two hundred sixty-seven million, nine hundred ninety-five thousand, seven hundred ninety".