866757222445472 has 48 divisors (see below), whose sum is σ = 1794213341186112. Its totient is φ = 411371665436160.

The previous prime is 866757222445399. The next prime is 866757222445481. The reversal of 866757222445472 is 274544222757668.

It is a happy number.

It is a super-2 number, since 2×866757222445472² (a number of 31 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 866757222445396 and 866757222445405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4494786293 + ... + 4494979124.

It is an arithmetic number, because the mean of its divisors is an integer number (37379444608044).

Almost surely, 2^{866757222445472} is an apocalyptic number.

It is an amenable number.

866757222445472 is an abundant number, since it is smaller than the sum of its proper divisors (927456118740640).

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

866757222445472 is a wasteful number, since it uses less digits than its factorization.

866757222445472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8989765581 (or 8989765573 counting only the distinct ones).

The product of its digits is 2528870400, while the sum is 71.

The spelling of 866757222445472 in words is "eight hundred sixty-six trillion, seven hundred fifty-seven billion, two hundred twenty-two million, four hundred forty-five thousand, four hundred seventy-two".