2643251404 has 12 divisors (see below), whose sum is σ = 4712967504. Its totient is φ = 1296689264.

The previous prime is 2643251393. The next prime is 2643251411. The reversal of 2643251404 is 4041523462.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6233872 + ... + 6234295.

It is an arithmetic number, because the mean of its divisors is an integer number (392747292).

Almost surely, 2^2643251404 is an apocalyptic number.

It is an amenable number.

2643251404 is a deficient number, since it is larger than the sum of its proper divisors (2069716100).

2643251404 is a wasteful number, since it uses less digits than its factorization.

2643251404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12468224 (or 12468222 counting only the distinct ones).

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

The square root of 2643251404 is about 51412.5607609658. The cubic root of 2643251404 is about 1382.6518015577.

Adding to 2643251404 its reverse (4041523462), we get a palindrome (6684774866).

The spelling of 2643251404 in words is "two billion, six hundred forty-three million, two hundred fifty-one thousand, four hundred four".