2211767680 has 32 divisors (see below), whose sum is σ = 5287508640. Its totient is φ = 884706816.

The previous prime is 2211767671. The next prime is 2211767683. The reversal of 2211767680 is 867671122.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211767683) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1727304 + ... + 1728583.

It is an arithmetic number, because the mean of its divisors is an integer number (165234645).

Almost surely, 2^2211767680 is an apocalyptic number.

2211767680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211767680 is an abundant number, since it is smaller than the sum of its proper divisors (3075740960).

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

2211767680 is an equidigital number, since it uses as much as digits as its factorization.

2211767680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3455906 (or 3455894 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 2211767680 is about 47029.4341875383. The cubic root of 2211767680 is about 1302.9062553853.

The spelling of 2211767680 in words is "two billion, two hundred eleven million, seven hundred sixty-seven thousand, six hundred eighty".