23603915861 has 2 divisors, whose sum is σ = 23603915862. Its totient is φ = 23603915860.

The previous prime is 23603915851. The next prime is 23603915873. The reversal of 23603915861 is 16851930632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23522356900 + 81558961 = 153370^2 + 9031^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23603915861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23603915851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11801957930 + 11801957931.

It is an arithmetic number, because the mean of its divisors is an integer number (11801957931).

Almost surely, 2^23603915861 is an apocalyptic number.

It is an amenable number.

23603915861 is a deficient number, since it is larger than the sum of its proper divisors (1).

23603915861 is an equidigital number, since it uses as much as digits as its factorization.

23603915861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 23603915861 in words is "twenty-three billion, six hundred three million, nine hundred fifteen thousand, eight hundred sixty-one".