23612066549 has 2 divisors, whose sum is σ = 23612066550. Its totient is φ = 23612066548.

The previous prime is 23612066437. The next prime is 23612066551. The reversal of 23612066549 is 94566021632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23365262449 + 246804100 = 152857^2 + 15710^2 .

It is a cyclic number.

It is not a de Polignac number, because 23612066549 - 2²⁸ = 23343631093 is a prime.

Together with 23612066551, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23612066749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11806033274 + 11806033275.

It is an arithmetic number, because the mean of its divisors is an integer number (11806033275).

Almost surely, 2^23612066549 is an apocalyptic number.

It is an amenable number.

23612066549 is a deficient number, since it is larger than the sum of its proper divisors (1).

23612066549 is an equidigital number, since it uses as much as digits as its factorization.

23612066549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 23612066549 in words is "twenty-three billion, six hundred twelve million, sixty-six thousand, five hundred forty-nine".