78992440199 has 8 divisors (see below), whose sum is σ = 82549251840. Its totient is φ = 75513800376.

The previous prime is 78992440157. The next prime is 78992440213. The reversal of 78992440199 is 99104429987.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78992440199 - 2⁸ = 78992439943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78992440129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19540889 + ... + 19544930.

It is an arithmetic number, because the mean of its divisors is an integer number (10318656480).

Almost surely, 2^78992440199 is an apocalyptic number.

78992440199 is a deficient number, since it is larger than the sum of its proper divisors (3556811641).

78992440199 is a wasteful number, since it uses less digits than its factorization.

78992440199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39085909.

The product of its (nonzero) digits is 11757312, while the sum is 62.

The spelling of 78992440199 in words is "seventy-eight billion, nine hundred ninety-two million, four hundred forty thousand, one hundred ninety-nine".