866799453408 has 96 divisors (see below), whose sum is σ = 2609786640384. Its totient is φ = 246762865152.

The previous prime is 866799453353. The next prime is 866799453409. The reversal of 866799453408 is 804354997668.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866799453409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2142160 + ... + 2514447.

It is an arithmetic number, because the mean of its divisors is an integer number (27185277504).

Almost surely, 2^866799453408 is an apocalyptic number.

It is an amenable number.

866799453408 is an abundant number, since it is smaller than the sum of its proper divisors (1742987186976).

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

866799453408 is a wasteful number, since it uses less digits than its factorization.

866799453408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4656904 (or 4656896 counting only the distinct ones).

The product of its (nonzero) digits is 313528320, while the sum is 69.

The spelling of 866799453408 in words is "eight hundred sixty-six billion, seven hundred ninety-nine million, four hundred fifty-three thousand, four hundred eight".