23728434901 has 2 divisors, whose sum is σ = 23728434902. Its totient is φ = 23728434900.

The previous prime is 23728434893. The next prime is 23728434929. The reversal of 23728434901 is 10943482732.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23051134276 + 677300625 = 151826^2 + 26025^2 .

It is a cyclic number.

It is not a de Polignac number, because 23728434901 - 2³ = 23728434893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23728434971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11864217450 + 11864217451.

It is an arithmetic number, because the mean of its divisors is an integer number (11864217451).

Almost surely, 2^23728434901 is an apocalyptic number.

It is an amenable number.

23728434901 is a deficient number, since it is larger than the sum of its proper divisors (1).

23728434901 is an equidigital number, since it uses as much as digits as its factorization.

23728434901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 23728434901 in words is "twenty-three billion, seven hundred twenty-eight million, four hundred thirty-four thousand, nine hundred one".