85977417191423 has 2 divisors, whose sum is σ = 85977417191424. Its totient is φ = 85977417191422.

The previous prime is 85977417191371. The next prime is 85977417191437. The reversal of 85977417191423 is 32419171477958.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85977417191423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85977417191923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42988708595711 + 42988708595712.

It is an arithmetic number, because the mean of its divisors is an integer number (42988708595712).

Almost surely, 2^{85977417191423} is an apocalyptic number.

85977417191423 is a deficient number, since it is larger than the sum of its proper divisors (1).

85977417191423 is an equidigital number, since it uses as much as digits as its factorization.

85977417191423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 106686720, while the sum is 68.

The spelling of 85977417191423 in words is "eighty-five trillion, nine hundred seventy-seven billion, four hundred seventeen million, one hundred ninety-one thousand, four hundred twenty-three".