85349963840 has 224 divisors, whose sum is σ = 225994813440. Its totient is φ = 30569011200.

The previous prime is 85349963833. The next prime is 85349963843. The reversal of 85349963840 is 4836994358.

It is a self number, because there is not a number n which added to its sum of digits gives 85349963840.

It is not an unprimeable number, because it can be changed into a prime (85349963843) 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, 8099375 + ... + 8109905.

Almost surely, 2^85349963840 is an apocalyptic number.

85349963840 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 85349963840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112997406720).

85349963840 is an abundant number, since it is smaller than the sum of its proper divisors (140644849600).

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

85349963840 is a wasteful number, since it uses less digits than its factorization.

85349963840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10641 (or 10631 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 59.

The spelling of 85349963840 in words is "eighty-five billion, three hundred forty-nine million, nine hundred sixty-three thousand, eight hundred forty".