220116642887 has 4 divisors (see below), whose sum is σ = 225485341536. Its totient is φ = 214747944240.

The previous prime is 220116642871. The next prime is 220116642899. The reversal of 220116642887 is 788246611022.

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 220116642887 - 2⁴ = 220116642871 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 (220116642847) 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, 2684349263 + ... + 2684349344.

It is an arithmetic number, because the mean of its divisors is an integer number (56371335384).

Almost surely, 2^220116642887 is an apocalyptic number.

220116642887 is a deficient number, since it is larger than the sum of its proper divisors (5368698649).

220116642887 is an equidigital number, since it uses as much as digits as its factorization.

220116642887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5368698648.

The product of its (nonzero) digits is 516096, while the sum is 47.

The spelling of 220116642887 in words is "two hundred twenty billion, one hundred sixteen million, six hundred forty-two thousand, eight hundred eighty-seven".