85217810358 has 32 divisors (see below), whose sum is σ = 180476958816. Its totient is φ = 26732671488.

The previous prime is 85217810333. The next prime is 85217810389. The reversal of 85217810358 is 85301871258.

It is a congruent number.

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, 1428660 + ... + 1487112.

It is an arithmetic number, because the mean of its divisors is an integer number (5639904963).

Almost surely, 2^85217810358 is an apocalyptic number.

85217810358 is an abundant number, since it is smaller than the sum of its proper divisors (95259148458).

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

85217810358 is a wasteful number, since it uses less digits than its factorization.

85217810358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72768.

The product of its (nonzero) digits is 537600, while the sum is 48.

The spelling of 85217810358 in words is "eighty-five billion, two hundred seventeen million, eight hundred ten thousand, three hundred fifty-eight".