866757638362044 has 96 divisors (see below), whose sum is σ = 2376221891855616. Its totient is φ = 242427756487680.

The previous prime is 866757638362019. The next prime is 866757638362111. The reversal of 866757638362044 is 440263836757668.

866757638362044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3867082 + ... + 41814705.

It is an arithmetic number, because the mean of its divisors is an integer number (24752311373496).

Almost surely, 2^{866757638362044} is an apocalyptic number.

It is an amenable number.

866757638362044 is an abundant number, since it is smaller than the sum of its proper divisors (1509464253493572).

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

866757638362044 is a wasteful number, since it uses less digits than its factorization.

866757638362044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45692875 (or 45692873 counting only the distinct ones).

The product of its (nonzero) digits is 5852528640, while the sum is 75.

The spelling of 866757638362044 in words is "eight hundred sixty-six trillion, seven hundred fifty-seven billion, six hundred thirty-eight million, three hundred sixty-two thousand, forty-four".