85231311354099 has 80 divisors (see below), whose sum is σ = 134410339937280. Its totient is φ = 53674353371520.

The previous prime is 85231311354089. The next prime is 85231311354157. The reversal of 85231311354099 is 99045311313258.

It is a happy number.

85231311354099 is a `hidden beast` number, since 8 + 5 + 2 + 3 + 1 + 3 + 1 + 1 + 3 + 540 + 99 = 666.

It is not a de Polignac number, because 85231311354099 - 2⁸ = 85231311353843 is a prime.

It is a super-2 number, since 2×85231311354099² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85231311354089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4903132962 + ... + 4903150344.

It is an arithmetic number, because the mean of its divisors is an integer number (1680129249216).

Almost surely, 2^{85231311354099} is an apocalyptic number.

85231311354099 is a deficient number, since it is larger than the sum of its proper divisors (49179028583181).

85231311354099 is a wasteful number, since it uses less digits than its factorization.

85231311354099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26462 (or 26453 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 54.

The spelling of 85231311354099 in words is "eighty-five trillion, two hundred thirty-one billion, three hundred eleven million, three hundred fifty-four thousand, ninety-nine".