866577673706054 has 4 divisors (see below), whose sum is σ = 1299866510559084. Its totient is φ = 433288836853026.

The previous prime is 866577673706033. The next prime is 866577673706099. The reversal of 866577673706054 is 450607376775668.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216644418426512 + ... + 216644418426515.

It is an arithmetic number, because the mean of its divisors is an integer number (324966627639771).

Almost surely, 2^{866577673706054} is an apocalyptic number.

866577673706054 is a deficient number, since it is larger than the sum of its proper divisors (433288836853030).

866577673706054 is a wasteful number, since it uses less digits than its factorization.

866577673706054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433288836853029.

The product of its (nonzero) digits is 7468070400, while the sum is 77.

The spelling of 866577673706054 in words is "eight hundred sixty-six trillion, five hundred seventy-seven billion, six hundred seventy-three million, seven hundred six thousand, fifty-four".