23403520157489 has 2 divisors, whose sum is σ = 23403520157490. Its totient is φ = 23403520157488.

The previous prime is 23403520157453. The next prime is 23403520157509. The reversal of 23403520157489 is 98475102530432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23377853554225 + 25666603264 = 4835065^2 + 160208^2 .

It is a cyclic number.

It is not a de Polignac number, because 23403520157489 - 2⁸ = 23403520157233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23403520157489.

It is not a weakly prime, because it can be changed into another prime (23403520157419) 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, 11701760078744 + 11701760078745.

It is an arithmetic number, because the mean of its divisors is an integer number (11701760078745).

Almost surely, 2^{23403520157489} is an apocalyptic number.

It is an amenable number.

23403520157489 is a deficient number, since it is larger than the sum of its proper divisors (1).

23403520157489 is an equidigital number, since it uses as much as digits as its factorization.

23403520157489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7257600, while the sum is 53.

The spelling of 23403520157489 in words is "twenty-three trillion, four hundred three billion, five hundred twenty million, one hundred fifty-seven thousand, four hundred eighty-nine".