85898921472 has 720 divisors, whose sum is σ = 317966961312. Its totient is φ = 22574039040.

The previous prime is 85898921447. The next prime is 85898921509. The reversal of 85898921472 is 27412989858.

85898921472 is a `hidden beast` number, since 8 + 5 + 89 + 89 + 2 + 1 + 472 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an alternating number because its digits alternate between even and odd.

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, 305689972 + ... + 305690252.

Almost surely, 2^85898921472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85898921472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158983480656).

85898921472 is an abundant number, since it is smaller than the sum of its proper divisors (232068039840).

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

85898921472 is an frugal number, since it uses more digits than its factorization.

85898921472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343 (or 306 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 63.

The spelling of 85898921472 in words is "eighty-five billion, eight hundred ninety-eight million, nine hundred twenty-one thousand, four hundred seventy-two".