866766432040048 has 20 divisors (see below), whose sum is σ = 1696672951380400. Its totient is φ = 428915347812864.

The previous prime is 866766432040021. The next prime is 866766432040181. The reversal of 866766432040048 is 840040234667668.

It is a super-2 number, since 2×866766432040048² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279241761348 + ... + 279241764451.

It is an arithmetic number, because the mean of its divisors is an integer number (84833647569020).

Almost surely, 2^{866766432040048} is an apocalyptic number.

It is an amenable number.

866766432040048 is a deficient number, since it is larger than the sum of its proper divisors (829906519340352).

866766432040048 is a wasteful number, since it uses less digits than its factorization.

866766432040048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558483525904 (or 558483525898 counting only the distinct ones).

The product of its (nonzero) digits is 222953472, while the sum is 64.

The spelling of 866766432040048 in words is "eight hundred sixty-six trillion, seven hundred sixty-six billion, four hundred thirty-two million, forty thousand, forty-eight".