866808350653622 has 16 divisors (see below), whose sum is σ = 1400232069803952. Its totient is φ = 400064479560480.

The previous prime is 866808350653457. The next prime is 866808350653657. The reversal of 866808350653622 is 226356053808668.

It is a super-2 number, since 2×866808350653622² (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 7 ways as a sum of consecutive naturals, for example, 26364704 + ... + 49281987.

It is an arithmetic number, because the mean of its divisors is an integer number (87514504362747).

Almost surely, 2^{866808350653622} is an apocalyptic number.

866808350653622 is a deficient number, since it is larger than the sum of its proper divisors (533423719150330).

866808350653622 is a wasteful number, since it uses less digits than its factorization.

866808350653622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76087423.

The product of its (nonzero) digits is 597196800, while the sum is 68.

The spelling of 866808350653622 in words is "eight hundred sixty-six trillion, eight hundred eight billion, three hundred fifty million, six hundred fifty-three thousand, six hundred twenty-two".