791421275745 has 48 divisors (see below), whose sum is σ = 1479216211200. Its totient is φ = 390122922240.

The previous prime is 791421275737. The next prime is 791421275759. The reversal of 791421275745 is 547572124197.

It is a happy number.

791421275745 is a `hidden beast` number, since 7 + 9 + 1 + 42 + 1 + 27 + 574 + 5 = 666.

It is not a de Polignac number, because 791421275745 - 2³ = 791421275737 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 791421275691 and 791421275700.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11253225 + ... + 11323334.

It is an arithmetic number, because the mean of its divisors is an integer number (30817004400).

Almost surely, 2^791421275745 is an apocalyptic number.

It is an amenable number.

791421275745 is a deficient number, since it is larger than the sum of its proper divisors (687794935455).

791421275745 is a wasteful number, since it uses less digits than its factorization.

791421275745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22576630 (or 22576627 counting only the distinct ones).

The product of its digits is 4939200, while the sum is 54.

The spelling of 791421275745 in words is "seven hundred ninety-one billion, four hundred twenty-one million, two hundred seventy-five thousand, seven hundred forty-five".