85398181423 has 2 divisors, whose sum is σ = 85398181424. Its totient is φ = 85398181422.

The previous prime is 85398181391. The next prime is 85398181459. The reversal of 85398181423 is 32418189358.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85398181423 - 2⁵ = 85398181391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85398182423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42699090711 + 42699090712.

It is an arithmetic number, because the mean of its divisors is an integer number (42699090712).

Almost surely, 2^85398181423 is an apocalyptic number.

85398181423 is a deficient number, since it is larger than the sum of its proper divisors (1).

85398181423 is an equidigital number, since it uses as much as digits as its factorization.

85398181423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1658880, while the sum is 52.

The spelling of 85398181423 in words is "eighty-five billion, three hundred ninety-eight million, one hundred eighty-one thousand, four hundred twenty-three".