866511718722058 has 16 divisors (see below), whose sum is σ = 1342003505117184. Its totient is φ = 419183632446480.

The previous prime is 866511718722049. The next prime is 866511718722101. The reversal of 866511718722058 is 850227817115668.

It is a junction number, because it is equal to n+sod(n) for n = 866511718721984 and 866511718722002.

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, 1603585210 + ... + 1604125477.

It is an arithmetic number, because the mean of its divisors is an integer number (83875219069824).

Almost surely, 2^{866511718722058} is an apocalyptic number.

866511718722058 is a deficient number, since it is larger than the sum of its proper divisors (475491786395126).

866511718722058 is a wasteful number, since it uses less digits than its factorization.

866511718722058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3207715077.

The product of its (nonzero) digits is 90316800, while the sum is 67.

The spelling of 866511718722058 in words is "eight hundred sixty-six trillion, five hundred eleven billion, seven hundred eighteen million, seven hundred twenty-two thousand, fifty-eight".