2216685356887 has 4 divisors (see below), whose sum is σ = 2276595771976. Its totient is φ = 2156774941800.

The previous prime is 2216685356881. The next prime is 2216685356911. The reversal of 2216685356887 is 7886535866122.

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

It is a cyclic number.

It is not a de Polignac number, because 2216685356887 - 2⁷ = 2216685356759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216685356881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29955207489 + ... + 29955207562.

It is an arithmetic number, because the mean of its divisors is an integer number (569148942994).

Almost surely, 2^{2216685356887} is an apocalyptic number.

2216685356887 is a deficient number, since it is larger than the sum of its proper divisors (59910415089).

2216685356887 is an equidigital number, since it uses as much as digits as its factorization.

2216685356887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59910415088.

The product of its digits is 232243200, while the sum is 67.

The spelling of 2216685356887 in words is "two trillion, two hundred sixteen billion, six hundred eighty-five million, three hundred fifty-six thousand, eight hundred eighty-seven".