791649331201 has 4 divisors (see below), whose sum is σ = 791651952900. Its totient is φ = 791646709504.

The previous prime is 791649331181. The next prime is 791649331237. The reversal of 791649331201 is 102133946197.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102133946197 = 13999 ⋅7295803.

It can be written as a sum of positive squares in 2 ways, for example, as 718290150400 + 73359180801 = 847520^2 + 270849^2 .

It is a cyclic number.

It is not a de Polignac number, because 791649331201 - 2¹¹ = 791649329153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (791649331241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 788536 + ... + 1484953.

It is an arithmetic number, because the mean of its divisors is an integer number (197912988225).

Almost surely, 2^791649331201 is an apocalyptic number.

It is an amenable number.

791649331201 is a deficient number, since it is larger than the sum of its proper divisors (2621699).

791649331201 is a wasteful number, since it uses less digits than its factorization.

791649331201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2621698.

The product of its (nonzero) digits is 244944, while the sum is 46.

The spelling of 791649331201 in words is "seven hundred ninety-one billion, six hundred forty-nine million, three hundred thirty-one thousand, two hundred one".