23723661601 has 2 divisors, whose sum is σ = 23723661602. Its totient is φ = 23723661600.

The previous prime is 23723661593. The next prime is 23723661641. The reversal of 23723661601 is 10616632732.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22126860001 + 1596801600 = 148751^2 + 39960^2 .

It is a cyclic number.

It is not a de Polignac number, because 23723661601 - 2³ = 23723661593 is a prime.

It is not a weakly prime, because it can be changed into another prime (23723661641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11861830800 + 11861830801.

It is an arithmetic number, because the mean of its divisors is an integer number (11861830801).

Almost surely, 2^23723661601 is an apocalyptic number.

It is an amenable number.

23723661601 is a deficient number, since it is larger than the sum of its proper divisors (1).

23723661601 is an equidigital number, since it uses as much as digits as its factorization.

23723661601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 37.

The spelling of 23723661601 in words is "twenty-three billion, seven hundred twenty-three million, six hundred sixty-one thousand, six hundred one".