7942799823139 has 2 divisors, whose sum is σ = 7942799823140. Its totient is φ = 7942799823138.

The previous prime is 7942799823083. The next prime is 7942799823223. The reversal of 7942799823139 is 9313289972497.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7942799823139 - 2³⁷ = 7805360869667 is a prime.

It is not a weakly prime, because it can be changed into another prime (7942799803139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3971399911569 + 3971399911570.

It is an arithmetic number, because the mean of its divisors is an integer number (3971399911570).

Almost surely, 2^{7942799823139} is an apocalyptic number.

7942799823139 is a deficient number, since it is larger than the sum of its proper divisors (1).

7942799823139 is an equidigital number, since it uses as much as digits as its factorization.

7942799823139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 370355328, while the sum is 73.

The spelling of 7942799823139 in words is "seven trillion, nine hundred forty-two billion, seven hundred ninety-nine million, eight hundred twenty-three thousand, one hundred thirty-nine".