79827272897 has 4 divisors (see below), whose sum is σ = 79827932160. Its totient is φ = 79826613636.

The previous prime is 79827272893. The next prime is 79827272927.

79827272897 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 79827272897 - 2² = 79827272893 is a prime.

It is a super-2 number, since 2×79827272897² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79827272893) 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, 89873 + ... + 409550.

It is an arithmetic number, because the mean of its divisors is an integer number (19956983040).

Almost surely, 2^79827272897 is an apocalyptic number.

It is an amenable number.

79827272897 is a deficient number, since it is larger than the sum of its proper divisors (659263).

79827272897 is a wasteful number, since it uses less digits than its factorization.

79827272897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659262.

The product of its digits is 99574272, while the sum is 68.

The spelling of 79827272897 in words is "seventy-nine billion, eight hundred twenty-seven million, two hundred seventy-two thousand, eight hundred ninety-seven".