2645223412 has 24 divisors (see below), whose sum is σ = 5003651072. Its totient is φ = 1216360800.

The previous prime is 2645223359. The next prime is 2645223421. The reversal of 2645223412 is 2143225462.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79764 + ... + 107947.

Almost surely, 2^2645223412 is an apocalyptic number.

It is an amenable number.

2645223412 is a deficient number, since it is larger than the sum of its proper divisors (2358427660).

2645223412 is a wasteful number, since it uses less digits than its factorization.

2645223412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187999 (or 187997 counting only the distinct ones).

The product of its digits is 23040, while the sum is 31.

The square root of 2645223412 is about 51431.7354558448. The cubic root of 2645223412 is about 1382.9955603373.

Adding to 2645223412 its reverse (2143225462), we get a palindrome (4788448874).

The spelling of 2645223412 in words is "two billion, six hundred forty-five million, two hundred twenty-three thousand, four hundred twelve".