79100391810321 has 40 divisors (see below), whose sum is σ = 135243302589824. Its totient is φ = 45133061379840.

The previous prime is 79100391810281. The next prime is 79100391810379. The reversal of 79100391810321 is 12301819300197.

It is a happy number.

It is not a de Polignac number, because 79100391810321 - 2⁶ = 79100391810257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (79100391810521) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 103263925 + ... + 104027106.

Almost surely, 2^{79100391810321} is an apocalyptic number.

It is an amenable number.

79100391810321 is a deficient number, since it is larger than the sum of its proper divisors (56142910779503).

79100391810321 is a wasteful number, since it uses less digits than its factorization.

79100391810321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207291723 (or 207291714 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The spelling of 79100391810321 in words is "seventy-nine trillion, one hundred billion, three hundred ninety-one million, eight hundred ten thousand, three hundred twenty-one".