2211561464 has 16 divisors (see below), whose sum is σ = 4739060400. Its totient is φ = 947812032.

The previous prime is 2211561437. The next prime is 2211561479. The reversal of 2211561464 is 4641651122.

It is a self number, because there is not a number n which added to its sum of digits gives 2211561464.

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, 19746029 + ... + 19746140.

It is an arithmetic number, because the mean of its divisors is an integer number (296191275).

Almost surely, 2^2211561464 is an apocalyptic number.

It is an amenable number.

2211561464 is an abundant number, since it is smaller than the sum of its proper divisors (2527498936).

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

2211561464 is a wasteful number, since it uses less digits than its factorization.

2211561464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39492182 (or 39492178 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 2211561464 is about 47027.2417222188. The cubic root of 2211561464 is about 1302.8657616105.

The spelling of 2211561464 in words is "two billion, two hundred eleven million, five hundred sixty-one thousand, four hundred sixty-four".