20039375423 has 2 divisors, whose sum is σ = 20039375424. Its totient is φ = 20039375422.

The previous prime is 20039375351. The next prime is 20039375443. The reversal of 20039375423 is 32457393002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20039375423 - 2²⁴ = 20022598207 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20039375443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10019687711 + 10019687712.

It is an arithmetic number, because the mean of its divisors is an integer number (10019687712).

Almost surely, 2^20039375423 is an apocalyptic number.

20039375423 is a deficient number, since it is larger than the sum of its proper divisors (1).

20039375423 is an equidigital number, since it uses as much as digits as its factorization.

20039375423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 38.

The spelling of 20039375423 in words is "twenty billion, thirty-nine million, three hundred seventy-five thousand, four hundred twenty-three".