23905116291 has 32 divisors (see below), whose sum is σ = 37288480768. Its totient is φ = 13337200800.

The previous prime is 23905116269. The next prime is 23905116293. The reversal of 23905116291 is 19261150932.

It is not a de Polignac number, because 23905116291 - 2¹³ = 23905108099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23905116293) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4468080 + ... + 4473426.

It is an arithmetic number, because the mean of its divisors is an integer number (1165265024).

Almost surely, 2^23905116291 is an apocalyptic number.

23905116291 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23905116291 is a deficient number, since it is larger than the sum of its proper divisors (13383364477).

23905116291 is a wasteful number, since it uses less digits than its factorization.

23905116291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10351.

The product of its (nonzero) digits is 29160, while the sum is 39.

The spelling of 23905116291 in words is "twenty-three billion, nine hundred five million, one hundred sixteen thousand, two hundred ninety-one".