8272435792891 has 4 divisors (see below), whose sum is σ = 8273730592800. Its totient is φ = 8271140992984.

The previous prime is 8272435792837. The next prime is 8272435792897. The reversal of 8272435792891 is 1982975342728.

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

It is a cyclic number.

It is not a de Polignac number, because 8272435792891 - 2²¹ = 8272433695739 is a prime.

It is a super-2 number, since 2×8272435792891² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8272435792897) 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, 647390371 + ... + 647403148.

It is an arithmetic number, because the mean of its divisors is an integer number (2068432648200).

Almost surely, 2^{8272435792891} is an apocalyptic number.

8272435792891 is a deficient number, since it is larger than the sum of its proper divisors (1294799909).

8272435792891 is a wasteful number, since it uses less digits than its factorization.

8272435792891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294799908.

The product of its digits is 121927680, while the sum is 67.

The spelling of 8272435792891 in words is "eight trillion, two hundred seventy-two billion, four hundred thirty-five million, seven hundred ninety-two thousand, eight hundred ninety-one".