23209601551 has 2 divisors, whose sum is σ = 23209601552. Its totient is φ = 23209601550.

The previous prime is 23209601533. The next prime is 23209601593. The reversal of 23209601551 is 15510690232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23209601551 - 2²⁵ = 23176047119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23209601651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11604800775 + 11604800776.

It is an arithmetic number, because the mean of its divisors is an integer number (11604800776).

Almost surely, 2^23209601551 is an apocalyptic number.

23209601551 is a deficient number, since it is larger than the sum of its proper divisors (1).

23209601551 is an equidigital number, since it uses as much as digits as its factorization.

23209601551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 34.

The spelling of 23209601551 in words is "twenty-three billion, two hundred nine million, six hundred one thousand, five hundred fifty-one".