23974215511 has 2 divisors, whose sum is σ = 23974215512. Its totient is φ = 23974215510.

The previous prime is 23974215481. The next prime is 23974215589. The reversal of 23974215511 is 11551247932.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23974215511 - 2¹⁷ = 23974084439 is a prime.

It is a super-2 number, since 2×23974215511² (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 (23974215011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11987107755 + 11987107756.

It is an arithmetic number, because the mean of its divisors is an integer number (11987107756).

Almost surely, 2^23974215511 is an apocalyptic number.

23974215511 is a deficient number, since it is larger than the sum of its proper divisors (1).

23974215511 is an equidigital number, since it uses as much as digits as its factorization.

23974215511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 40.

The spelling of 23974215511 in words is "twenty-three billion, nine hundred seventy-four million, two hundred fifteen thousand, five hundred eleven".