79891422001 has 8 divisors (see below), whose sum is σ = 83414127744. Its totient is φ = 76372813440.

The previous prime is 79891421899. The next prime is 79891422007. The reversal of 79891422001 is 10022419897.

It is a happy number.

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 79891422001 - 2⁷ = 79891421873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79891422007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 984405 + ... + 1062466.

It is an arithmetic number, because the mean of its divisors is an integer number (10426765968).

Almost surely, 2^79891422001 is an apocalyptic number.

It is an amenable number.

79891422001 is a deficient number, since it is larger than the sum of its proper divisors (3522705743).

79891422001 is a wasteful number, since it uses less digits than its factorization.

79891422001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2048591.

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 79891422001 in words is "seventy-nine billion, eight hundred ninety-one million, four hundred twenty-two thousand, one".