856222744024424 has 32 divisors (see below), whose sum is σ = 1834879599105600. Its totient is φ = 366929289342720.

The previous prime is 856222744024399. The next prime is 856222744024429. The reversal of 856222744024424 is 424420447222658.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a self number, because there is not a number n which added to its sum of digits gives 856222744024424.

It is not an unprimeable number, because it can be changed into a prime (856222744024429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 484844897 + ... + 486607664.

It is an arithmetic number, because the mean of its divisors is an integer number (57339987472050).

Almost surely, 2^{856222744024424} is an apocalyptic number.

It is an amenable number.

856222744024424 is an abundant number, since it is smaller than the sum of its proper divisors (978656855081176).

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

856222744024424 is a wasteful number, since it uses less digits than its factorization.

856222744024424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971468313 (or 971468309 counting only the distinct ones).

The product of its (nonzero) digits is 55050240, while the sum is 56.

The spelling of 856222744024424 in words is "eight hundred fifty-six trillion, two hundred twenty-two billion, seven hundred forty-four million, twenty-four thousand, four hundred twenty-four".