7942799823191 has 4 divisors (see below), whose sum is σ = 7942845367800. Its totient is φ = 7942754278584.

The previous prime is 7942799823139. The next prime is 7942799823223. The reversal of 7942799823191 is 1913289972497.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7942799823191 - 2¹⁴ = 7942799806807 is a prime.

It is a super-2 number, since 2×7942799823191² (a number of 27 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 (7942799829191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22509701 + ... + 22859838.

It is an arithmetic number, because the mean of its divisors is an integer number (1985711341950).

Almost surely, 2^{7942799823191} is an apocalyptic number.

7942799823191 is a deficient number, since it is larger than the sum of its proper divisors (45544609).

7942799823191 is a wasteful number, since it uses less digits than its factorization.

7942799823191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45544608.

The product of its digits is 123451776, while the sum is 71.

The spelling of 7942799823191 in words is "seven trillion, nine hundred forty-two billion, seven hundred ninety-nine million, eight hundred twenty-three thousand, one hundred ninety-one".