791240452445 has 4 divisors (see below), whose sum is σ = 949488542940. Its totient is φ = 632992361952.

The previous prime is 791240452363. The next prime is 791240452487. The reversal of 791240452445 is 544254042197.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 544254042197 = 59 ⋅9224644783.

It can be written as a sum of positive squares in 2 ways, for example, as 192353293561 + 598887158884 = 438581^2 + 773878^2 .

It is a cyclic number.

It is not a de Polignac number, because 791240452445 - 2³² = 786945485149 is a prime.

It is a super-2 number, since 2×791240452445² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 791240452445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79124045240 + ... + 79124045249.

It is an arithmetic number, because the mean of its divisors is an integer number (237372135735).

Almost surely, 2^791240452445 is an apocalyptic number.

It is an amenable number.

791240452445 is a deficient number, since it is larger than the sum of its proper divisors (158248090495).

791240452445 is a wasteful number, since it uses less digits than its factorization.

791240452445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158248090494.

The product of its (nonzero) digits is 1612800, while the sum is 47.

The spelling of 791240452445 in words is "seven hundred ninety-one billion, two hundred forty million, four hundred fifty-two thousand, four hundred forty-five".