2215816680 has 128 divisors (see below), whose sum is σ = 8287764480. Its totient is φ = 460427520.

The previous prime is 2215816657. The next prime is 2215816693. The reversal of 2215816680 is 866185122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110664 + ... + 129143.

It is an arithmetic number, because the mean of its divisors is an integer number (64748160).

Almost surely, 2^2215816680 is an apocalyptic number.

2215816680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2215816680 is an abundant number, since it is smaller than the sum of its proper divisors (6071947800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2215816680 is a wasteful number, since it uses less digits than its factorization.

2215816680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239839 (or 239835 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 2215816680 is about 47072.4620133683. The cubic root of 2215816680 is about 1303.7008312270.

The spelling of 2215816680 in words is "two billion, two hundred fifteen million, eight hundred sixteen thousand, six hundred eighty".