2640111460 has 24 divisors (see below), whose sum is σ = 6336267840. Its totient is φ = 905181024.

The previous prime is 2640111451. The next prime is 2640111521. The reversal of 2640111460 is 641110462.

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, 9428830 + ... + 9429109.

It is an arithmetic number, because the mean of its divisors is an integer number (264011160).

Almost surely, 2^2640111460 is an apocalyptic number.

2640111460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2640111460 is an abundant number, since it is smaller than the sum of its proper divisors (3696156380).

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

2640111460 is a wasteful number, since it uses less digits than its factorization.

2640111460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18857955 (or 18857953 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 2640111460 is about 51382.0149468664. The cubic root of 2640111460 is about 1382.1040961268.

The spelling of 2640111460 in words is "two billion, six hundred forty million, one hundred eleven thousand, four hundred sixty".