2291647612220 has 12 divisors (see below), whose sum is σ = 4812459985704. Its totient is φ = 916659044880.

The previous prime is 2291647612201. The next prime is 2291647612249. The reversal of 2291647612220 is 222167461922.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57291190286 + ... + 57291190325.

It is an arithmetic number, because the mean of its divisors is an integer number (401038332142).

Almost surely, 2^{2291647612220} is an apocalyptic number.

2291647612220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2291647612220 is an abundant number, since it is smaller than the sum of its proper divisors (2520812373484).

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

2291647612220 is a wasteful number, since it uses less digits than its factorization.

2291647612220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114582380620 (or 114582380618 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 2291647612220 in words is "two trillion, two hundred ninety-one billion, six hundred forty-seven million, six hundred twelve thousand, two hundred twenty".