791017920001 has 4 divisors (see below), whose sum is σ = 791127350100. Its totient is φ = 790908489904.

The previous prime is 791017919999. The next prime is 791017920031. The reversal of 791017920001 is 100029710197.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100029710197 = 37 ⋅2703505681.

It can be written as a sum of positive squares in 2 ways, for example, as 642280427776 + 148737492225 = 801424^2 + 385665^2 .

It is a cyclic number.

It is not a de Polignac number, because 791017920001 - 2¹ = 791017919999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (791017920031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54704206 + ... + 54718663.

It is an arithmetic number, because the mean of its divisors is an integer number (197781837525).

Almost surely, 2^791017920001 is an apocalyptic number.

It is an amenable number.

791017920001 is a deficient number, since it is larger than the sum of its proper divisors (109430099).

791017920001 is a wasteful number, since it uses less digits than its factorization.

791017920001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109430098.

The product of its (nonzero) digits is 7938, while the sum is 37.

The spelling of 791017920001 in words is "seven hundred ninety-one billion, seventeen million, nine hundred twenty thousand, one".