79534378199 has 8 divisors (see below), whose sum is σ = 80562461760. Its totient is φ = 78506827776.

The previous prime is 79534378181. The next prime is 79534378237. The reversal of 79534378199 is 99187343597.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79534378199 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 (79534378129) 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, 171479 + ... + 434135.

It is an arithmetic number, because the mean of its divisors is an integer number (10070307720).

Almost surely, 2^79534378199 is an apocalyptic number.

79534378199 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

79534378199 is a deficient number, since it is larger than the sum of its proper divisors (1028083561).

79534378199 is a wasteful number, since it uses less digits than its factorization.

79534378199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266569.

The product of its digits is 51438240, while the sum is 65.

The spelling of 79534378199 in words is "seventy-nine billion, five hundred thirty-four million, three hundred seventy-eight thousand, one hundred ninety-nine".