85458830138 has 32 divisors (see below), whose sum is σ = 142492372992. Its totient is φ = 38114150400.

The previous prime is 85458830113. The next prime is 85458830147. The reversal of 85458830138 is 83103885458.

It is a self number, because there is not a number n which added to its sum of digits gives 85458830138.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172103 + ... + 447813.

It is an arithmetic number, because the mean of its divisors is an integer number (4452886656).

Almost surely, 2^85458830138 is an apocalyptic number.

85458830138 is a deficient number, since it is larger than the sum of its proper divisors (57033542854).

85458830138 is a wasteful number, since it uses less digits than its factorization.

85458830138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275990.

The product of its (nonzero) digits is 3686400, while the sum is 53.

The spelling of 85458830138 in words is "eighty-five billion, four hundred fifty-eight million, eight hundred thirty thousand, one hundred thirty-eight".