91000604269 has 4 divisors (see below), whose sum is σ = 91094323680. Its totient is φ = 90906884860.

The previous prime is 91000604209. The next prime is 91000604273. The reversal of 91000604269 is 96240600019.

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 an emirpimes, since its reverse is a distinct semiprime: 96240600019 = 110323 ⋅872353.

It is a cyclic number.

It is not a de Polignac number, because 91000604269 - 2¹¹ = 91000602221 is a prime.

It is a super-2 number, since 2×91000604269² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91000604209) 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, 46858249 + ... + 46860190.

It is an arithmetic number, because the mean of its divisors is an integer number (22773580920).

Almost surely, 2^91000604269 is an apocalyptic number.

It is an amenable number.

91000604269 is a deficient number, since it is larger than the sum of its proper divisors (93719411).

91000604269 is an equidigital number, since it uses as much as digits as its factorization.

91000604269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93719410.

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 91000604269 in words is "ninety-one billion, six hundred four thousand, two hundred sixty-nine".