2687123444 has 24 divisors (see below), whose sum is σ = 4787693568. Its totient is φ = 1319286240.

The previous prime is 2687123443. The next prime is 2687123447. The reversal of 2687123444 is 4443217862.

2687123444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2687123444² = 14441264806588842272, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2687123443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139037 + ... + 157179.

It is an arithmetic number, because the mean of its divisors is an integer number (199487232).

Almost surely, 2^2687123444 is an apocalyptic number.

It is an amenable number.

2687123444 is a deficient number, since it is larger than the sum of its proper divisors (2100570124).

2687123444 is a wasteful number, since it uses less digits than its factorization.

2687123444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18815 (or 18813 counting only the distinct ones).

The product of its digits is 258048, while the sum is 41.

The square root of 2687123444 is about 51837.4714275301. The cubic root of 2687123444 is about 1390.2595040224.

The spelling of 2687123444 in words is "two billion, six hundred eighty-seven million, one hundred twenty-three thousand, four hundred forty-four".