91864141911 has 24 divisors (see below), whose sum is σ = 134057957904. Its totient is φ = 60615659520.

The previous prime is 91864141909. The next prime is 91864141961. The reversal of 91864141911 is 11914146819.

91864141911 is a `hidden beast` number, since 9 + 186 + 41 + 419 + 11 = 666.

It is not a de Polignac number, because 91864141911 - 2¹ = 91864141909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91864141961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 236656 + ... + 489626.

It is an arithmetic number, because the mean of its divisors is an integer number (5585748246).

Almost surely, 2^91864141911 is an apocalyptic number.

91864141911 is a deficient number, since it is larger than the sum of its proper divisors (42193815993).

91864141911 is a wasteful number, since it uses less digits than its factorization.

91864141911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253391 (or 253388 counting only the distinct ones).

The product of its digits is 62208, while the sum is 45.

The spelling of 91864141911 in words is "ninety-one billion, eight hundred sixty-four million, one hundred forty-one thousand, nine hundred eleven".