2540446664 has 32 divisors (see below), whose sum is σ = 5446673280. Its totient is φ = 1088191104.

The previous prime is 2540446639. The next prime is 2540446691. The reversal of 2540446664 is 4666440452.

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, 106004 + ... + 127740.

It is an arithmetic number, because the mean of its divisors is an integer number (170208540).

Almost surely, 2^2540446664 is an apocalyptic number.

It is an amenable number.

2540446664 is an abundant number, since it is smaller than the sum of its proper divisors (2906226616).

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

2540446664 is a wasteful number, since it uses less digits than its factorization.

2540446664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23837 (or 23833 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 41.

The square root of 2540446664 is about 50402.8438086583. The cubic root of 2540446664 is about 1364.4889630772.

The spelling of 2540446664 in words is "two billion, five hundred forty million, four hundred forty-six thousand, six hundred sixty-four".