866747333540 has 24 divisors (see below), whose sum is σ = 1985639346432. Its totient is φ = 315180848480.

The previous prime is 866747333531. The next prime is 866747333579. The reversal of 866747333540 is 45333747668.

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, 1969880084 + ... + 1969880523.

It is an arithmetic number, because the mean of its divisors is an integer number (82734972768).

Almost surely, 2^866747333540 is an apocalyptic number.

It is an amenable number.

866747333540 is an abundant number, since it is smaller than the sum of its proper divisors (1118892012892).

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

866747333540 is a wasteful number, since it uses less digits than its factorization.

866747333540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3939760627 (or 3939760625 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 56.

The spelling of 866747333540 in words is "eight hundred sixty-six billion, seven hundred forty-seven million, three hundred thirty-three thousand, five hundred forty".