19875642323 has 2 divisors, whose sum is σ = 19875642324. Its totient is φ = 19875642322.

The previous prime is 19875642301. The next prime is 19875642331. The reversal of 19875642323 is 32324657891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19875642323 - 2²⁸ = 19607206867 is a prime.

It is not a weakly prime, because it can be changed into another prime (19875642223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9937821161 + 9937821162.

It is an arithmetic number, because the mean of its divisors is an integer number (9937821162).

Almost surely, 2^19875642323 is an apocalyptic number.

19875642323 is a deficient number, since it is larger than the sum of its proper divisors (1).

19875642323 is an equidigital number, since it uses as much as digits as its factorization.

19875642323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 50.

The spelling of 19875642323 in words is "nineteen billion, eight hundred seventy-five million, six hundred forty-two thousand, three hundred twenty-three".