866456049211040 has 96 divisors (see below), whose sum is σ = 2113044923372544. Its totient is φ = 335400727173120.

The previous prime is 866456049211037. The next prime is 866456049211117. The reversal of 866456049211040 is 40112940654668.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1859206532 + ... + 1859672508.

It is an arithmetic number, because the mean of its divisors is an integer number (22010884618464).

Almost surely, 2^{866456049211040} is an apocalyptic number.

866456049211040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

866456049211040 is an abundant number, since it is smaller than the sum of its proper divisors (1246588874161504).

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

866456049211040 is a wasteful number, since it uses less digits than its factorization.

866456049211040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840910 (or 840902 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 56.

The spelling of 866456049211040 in words is "eight hundred sixty-six trillion, four hundred fifty-six billion, forty-nine million, two hundred eleven thousand, forty".