91279697219 has 8 divisors (see below), whose sum is σ = 92780921760. Its totient is φ = 89778628800.

The previous prime is 91279697177. The next prime is 91279697231.

91279697219 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91279697219 - 2³⁶ = 22560220483 is a prime.

It is a super-2 number, since 2×91279697219² (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 (91279697519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2054399 + ... + 2098359.

It is an arithmetic number, because the mean of its divisors is an integer number (11597615220).

Almost surely, 2^91279697219 is an apocalyptic number.

91279697219 is a deficient number, since it is larger than the sum of its proper divisors (1501224541).

91279697219 is a wasteful number, since it uses less digits than its factorization.

91279697219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78061.

The product of its digits is 7715736, while the sum is 62.

The spelling of 91279697219 in words is "ninety-one billion, two hundred seventy-nine million, six hundred ninety-seven thousand, two hundred nineteen".