85453255902 has 144 divisors (see below), whose sum is σ = 206893408896. Its totient is φ = 23459436000.

The previous prime is 85453255891. The next prime is 85453255939. The reversal of 85453255902 is 20955235458.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 42661633 + ... + 42663635.

It is an arithmetic number, because the mean of its divisors is an integer number (1436759784).

Almost surely, 2^85453255902 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85453255902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103446704448).

85453255902 is an abundant number, since it is smaller than the sum of its proper divisors (121440152994).

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

85453255902 is a wasteful number, since it uses less digits than its factorization.

85453255902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2235 (or 2197 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 48.

The spelling of 85453255902 in words is "eighty-five billion, four hundred fifty-three million, two hundred fifty-five thousand, nine hundred two".