866760825112400 has 60 divisors (see below), whose sum is σ = 2093897815559004. Its totient is φ = 344788836480000.

The previous prime is 866760825112381. The next prime is 866760825112487. The reversal of 866760825112400 is 4211528067668.

It can be written as a sum of positive squares in 6 ways, for example, as 319448275549456 + 547312549562944 = 17873116^2 + 23394712^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5985844901 + ... + 5985989700.

Almost surely, 2^{866760825112400} is an apocalyptic number.

866760825112400 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

866760825112400 is an abundant number, since it is smaller than the sum of its proper divisors (1227136990446604).

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

866760825112400 is a wasteful number, since it uses less digits than its factorization.

866760825112400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11971834800 (or 11971834789 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 56.

The spelling of 866760825112400 in words is "eight hundred sixty-six trillion, seven hundred sixty billion, eight hundred twenty-five million, one hundred twelve thousand, four hundred".