85210783320 has 128 divisors (see below), whose sum is σ = 275661973440. Its totient is φ = 20947107840.

The previous prime is 85210783303. The next prime is 85210783321. The reversal of 85210783320 is 2338701258.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85210783321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1151272 + ... + 1223048.

Almost surely, 2^85210783320 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 85210783320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137830986720).

85210783320 is an abundant number, since it is smaller than the sum of its proper divisors (190451190120).

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

85210783320 is a wasteful number, since it uses less digits than its factorization.

85210783320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72565 (or 72561 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 85210783320 in words is "eighty-five billion, two hundred ten million, seven hundred eighty-three thousand, three hundred twenty".