2421666885 has 32 divisors (see below), whose sum is σ = 4232259072. Its totient is φ = 1172655680.

The previous prime is 2421666839. The next prime is 2421666901. The reversal of 2421666885 is 5886661242.

It is not a de Polignac number, because 2421666885 - 2¹³ = 2421658693 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127582 + ... + 145328.

It is an arithmetic number, because the mean of its divisors is an integer number (132258096).

Almost surely, 2^2421666885 is an apocalyptic number.

It is an amenable number.

2421666885 is a deficient number, since it is larger than the sum of its proper divisors (1810592187).

2421666885 is a wasteful number, since it uses less digits than its factorization.

2421666885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18593.

The product of its digits is 1105920, while the sum is 48.

The square root of 2421666885 is about 49210.4347166330. The cubic root of 2421666885 is about 1342.8828712843.

The spelling of 2421666885 in words is "two billion, four hundred twenty-one million, six hundred sixty-six thousand, eight hundred eighty-five".