85899497280 has 224 divisors, whose sum is σ = 279812983680. Its totient is φ = 22318817280.

The previous prime is 85899497279. The next prime is 85899497377. The reversal of 85899497280 is 8279499858.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6259066 + ... + 6272774.

Almost surely, 2^85899497280 is an apocalyptic number.

85899497280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85899497280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139906491840).

85899497280 is an abundant number, since it is smaller than the sum of its proper divisors (193913486400).

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

85899497280 is a wasteful number, since it uses less digits than its factorization.

85899497280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13897 (or 13887 counting only the distinct ones).

The product of its (nonzero) digits is 104509440, while the sum is 69.

The spelling of 85899497280 in words is "eighty-five billion, eight hundred ninety-nine million, four hundred ninety-seven thousand, two hundred eighty".