7991110359420 has 96 divisors (see below), whose sum is σ = 24331597190208. Its totient is φ = 1951406272512.

The previous prime is 7991110359413. The next prime is 7991110359439. The reversal of 7991110359420 is 249530111997.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105832827 + ... + 105908306.

It is an arithmetic number, because the mean of its divisors is an integer number (253454137398).

Almost surely, 2^{7991110359420} is an apocalyptic number.

It is an amenable number.

7991110359420 is an abundant number, since it is smaller than the sum of its proper divisors (16340486830788).

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

7991110359420 is a wasteful number, since it uses less digits than its factorization.

7991110359420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211741199 (or 211741197 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 51.

The spelling of 7991110359420 in words is "seven trillion, nine hundred ninety-one billion, one hundred ten million, three hundred fifty-nine thousand, four hundred twenty".