85899345923 has 2 divisors, whose sum is σ = 85899345924. Its totient is φ = 85899345922.

The previous prime is 85899345869. The next prime is 85899345941. The reversal of 85899345923 is 32954399858.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85899345923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85899345923.

It is not a weakly prime, because it can be changed into another prime (85899345943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42949672961 + 42949672962.

It is an arithmetic number, because the mean of its divisors is an integer number (42949672962).

Almost surely, 2^85899345923 is an apocalyptic number.

85899345923 is a deficient number, since it is larger than the sum of its proper divisors (1).

85899345923 is an equidigital number, since it uses as much as digits as its factorization.

85899345923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 83980800, while the sum is 65.

The spelling of 85899345923 in words is "eighty-five billion, eight hundred ninety-nine million, three hundred forty-five thousand, nine hundred twenty-three".