2643103640 has 32 divisors (see below), whose sum is σ = 6059195280. Its totient is φ = 1037292672.

The previous prime is 2643103607. The next prime is 2643103657. The reversal of 2643103640 is 463013462.

2643103640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 621254 + ... + 625493.

Almost surely, 2^2643103640 is an apocalyptic number.

2643103640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2643103640 is an abundant number, since it is smaller than the sum of its proper divisors (3416091640).

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

2643103640 is a wasteful number, since it uses less digits than its factorization.

2643103640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246811 (or 1246807 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 2643103640 is about 51411.1236990595. The cubic root of 2643103640 is about 1382.6260365765.

The spelling of 2643103640 in words is "two billion, six hundred forty-three million, one hundred three thousand, six hundred forty".