85817440422 has 24 divisors (see below), whose sum is σ = 212500328976. Its totient is φ = 24519268656.

The previous prime is 85817440363. The next prime is 85817440433. The reversal of 85817440422 is 22404471858.

85817440422 is a `hidden beast` number, since 8 + 58 + 174 + 4 + 0 + 422 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 340545273 + ... + 340545524.

It is an arithmetic number, because the mean of its divisors is an integer number (8854180374).

Almost surely, 2^85817440422 is an apocalyptic number.

85817440422 is an abundant number, since it is smaller than the sum of its proper divisors (126682888554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85817440422 is a wasteful number, since it uses less digits than its factorization.

85817440422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681090812 (or 681090809 counting only the distinct ones).

The product of its (nonzero) digits is 573440, while the sum is 45.

The spelling of 85817440422 in words is "eighty-five billion, eight hundred seventeen million, four hundred forty thousand, four hundred twenty-two".