23154252531649 has 2 divisors, whose sum is σ = 23154252531650. Its totient is φ = 23154252531648.

The previous prime is 23154252531451. The next prime is 23154252531661. The reversal of 23154252531649 is 94613525245132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12966250353424 + 10188002178225 = 3600868^2 + 3191865^2 .

It is a cyclic number.

It is not a de Polignac number, because 23154252531649 - 2²⁵ = 23154218977217 is a prime.

It is a super-2 number, since 2×23154252531649² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23154252531596 and 23154252531605.

It is not a weakly prime, because it can be changed into another prime (23154252531149) 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, 11577126265824 + 11577126265825.

It is an arithmetic number, because the mean of its divisors is an integer number (11577126265825).

Almost surely, 2^{23154252531649} is an apocalyptic number.

It is an amenable number.

23154252531649 is a deficient number, since it is larger than the sum of its proper divisors (1).

23154252531649 is an equidigital number, since it uses as much as digits as its factorization.

23154252531649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776000, while the sum is 52.

The spelling of 23154252531649 in words is "twenty-three trillion, one hundred fifty-four billion, two hundred fifty-two million, five hundred thirty-one thousand, six hundred forty-nine".