23455240511 has 2 divisors, whose sum is σ = 23455240512. Its totient is φ = 23455240510.

The previous prime is 23455240489. The next prime is 23455240531. The reversal of 23455240511 is 11504255432.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23455240511 is a prime.

It is a super-2 number, since 2×23455240511² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23455240531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11727620255 + 11727620256.

It is an arithmetic number, because the mean of its divisors is an integer number (11727620256).

Almost surely, 2^23455240511 is an apocalyptic number.

23455240511 is a deficient number, since it is larger than the sum of its proper divisors (1).

23455240511 is an equidigital number, since it uses as much as digits as its factorization.

23455240511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 23455240511 its reverse (11504255432), we get a palindrome (34959495943).

The spelling of 23455240511 in words is "twenty-three billion, four hundred fifty-five million, two hundred forty thousand, five hundred eleven".