85461722380 has 96 divisors (see below), whose sum is σ = 200215701504. Its totient is φ = 30475889664.

The previous prime is 85461722369. The next prime is 85461722399. The reversal of 85461722380 is 8322716458.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 85461722380.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 752409 + ... + 858511.

It is an arithmetic number, because the mean of its divisors is an integer number (2085580224).

Almost surely, 2^85461722380 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 85461722380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100107850752).

85461722380 is an abundant number, since it is smaller than the sum of its proper divisors (114753979124).

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

85461722380 is a wasteful number, since it uses less digits than its factorization.

85461722380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106255 (or 106253 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 85461722380 in words is "eighty-five billion, four hundred sixty-one million, seven hundred twenty-two thousand, three hundred eighty".