23693933091 has 4 divisors (see below), whose sum is σ = 31591910792. Its totient is φ = 15795955392.

The previous prime is 23693933077. The next prime is 23693933111. The reversal of 23693933091 is 19033939632.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 23693933091 - 2⁶ = 23693933027 is a prime.

It is a super-2 number, since 2×23693933091² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23693933091.

It is not an unprimeable number, because it can be changed into a prime (23693933041) 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, 3948988846 + ... + 3948988851.

It is an arithmetic number, because the mean of its divisors is an integer number (7897977698).

Almost surely, 2^23693933091 is an apocalyptic number.

23693933091 is a deficient number, since it is larger than the sum of its proper divisors (7897977701).

23693933091 is an equidigital number, since it uses as much as digits as its factorization.

23693933091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7897977700.

The product of its (nonzero) digits is 708588, while the sum is 48.

The spelling of 23693933091 in words is "twenty-three billion, six hundred ninety-three million, nine hundred thirty-three thousand, ninety-one".