2539413191923 has 2 divisors, whose sum is σ = 2539413191924. Its totient is φ = 2539413191922.

The previous prime is 2539413191881. The next prime is 2539413191951. The reversal of 2539413191923 is 3291913149352.

2539413191923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2539413191923 is a prime.

It is not a weakly prime, because it can be changed into another prime (2539413191963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1269706595961 + 1269706595962.

It is an arithmetic number, because the mean of its divisors is an integer number (1269706595962).

Almost surely, 2^{2539413191923} is an apocalyptic number.

2539413191923 is a deficient number, since it is larger than the sum of its proper divisors (1).

2539413191923 is an equidigital number, since it uses as much as digits as its factorization.

2539413191923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1574640, while the sum is 52.

The spelling of 2539413191923 in words is "two trillion, five hundred thirty-nine billion, four hundred thirteen million, one hundred ninety-one thousand, nine hundred twenty-three".