855709975296 has 576 divisors, whose sum is σ = 2835833172480. Its totient is φ = 252315648000.

The previous prime is 855709975279. The next prime is 855709975297. The reversal of 855709975296 is 692579907558.

855709975296 is a `hidden beast` number, since 8 + 5 + 5 + 7 + 0 + 9 + 97 + 529 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (855709975297) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 527889366 + ... + 527890986.

It is an arithmetic number, because the mean of its divisors is an integer number (4923321480).

Almost surely, 2^855709975296 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 855709975296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1417916586240).

855709975296 is an abundant number, since it is smaller than the sum of its proper divisors (1980123197184).

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

855709975296 is a wasteful number, since it uses less digits than its factorization.

855709975296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841 (or 1821 counting only the distinct ones).

The product of its (nonzero) digits is 428652000, while the sum is 72.

The spelling of 855709975296 in words is "eight hundred fifty-five billion, seven hundred nine million, nine hundred seventy-five thousand, two hundred ninety-six".