791577269249 has 4 divisors (see below), whose sum is σ = 852467828436. Its totient is φ = 730686710064.

The previous prime is 791577269237. The next prime is 791577269257. The reversal of 791577269249 is 942962775197.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 205444627600 + 586132641649 = 453260^2 + 765593^2 .

It is a cyclic number.

It is not a de Polignac number, because 791577269249 - 2³⁶ = 722857792513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (791577269449) 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, 30445279574 + ... + 30445279599.

It is an arithmetic number, because the mean of its divisors is an integer number (213116957109).

Almost surely, 2^791577269249 is an apocalyptic number.

It is an amenable number.

791577269249 is a deficient number, since it is larger than the sum of its proper divisors (60890559187).

791577269249 is a wasteful number, since it uses less digits than its factorization.

791577269249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60890559186.

The product of its digits is 120022560, while the sum is 68.

The spelling of 791577269249 in words is "seven hundred ninety-one billion, five hundred seventy-seven million, two hundred sixty-nine thousand, two hundred forty-nine".