91119605744281 has 3 divisors (see below), whose sum is σ = 91119615289941. Its totient is φ = 91119596198622.

The previous prime is 91119605744257. The next prime is 91119605744317. The reversal of 91119605744281 is 18244750691119.

It is a happy number.

The square root of 91119605744281 is 9545659.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 91119605744281 - 2⁵ = 91119605744249 is a prime.

It is a super-2 number, since 2×91119605744281² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91119605714281) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4772830 + ... + 14318488.

It is an arithmetic number, because the mean of its divisors is an integer number (30373205096647).

Almost surely, 2^{91119605744281} is an apocalyptic number.

91119605744281 is the 9545659-th square number.

91119605744281 is the 4772830-th centered octagonal number.

It is an amenable number.

91119605744281 is a deficient number, since it is larger than the sum of its proper divisors (9545660).

91119605744281 is an frugal number, since it uses more digits than its factorization.

91119605744281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19091318 (or 9545659 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 58.

The spelling of 91119605744281 in words is "ninety-one trillion, one hundred nineteen billion, six hundred five million, seven hundred forty-four thousand, two hundred eighty-one".