23897938811 has 2 divisors, whose sum is σ = 23897938812. Its totient is φ = 23897938810.

The previous prime is 23897938721. The next prime is 23897938907. The reversal of 23897938811 is 11883979832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23897938811 - 2¹⁴ = 23897922427 is a prime.

It is a super-2 number, since 2×23897938811² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23897938511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11948969405 + 11948969406.

It is an arithmetic number, because the mean of its divisors is an integer number (11948969406).

Almost surely, 2^23897938811 is an apocalyptic number.

23897938811 is a deficient number, since it is larger than the sum of its proper divisors (1).

23897938811 is an equidigital number, since it uses as much as digits as its factorization.

23897938811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 59.

The spelling of 23897938811 in words is "twenty-three billion, eight hundred ninety-seven million, nine hundred thirty-eight thousand, eight hundred eleven".