2526664640 has 28 divisors (see below), whose sum is σ = 6016620936. Its totient is φ = 1010665728.

The previous prime is 2526664607. The next prime is 2526664709. The reversal of 2526664640 is 464666252.

2526664640 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 3 ways as a sum of consecutive naturals, for example, 3947594 + ... + 3948233.

Almost surely, 2^2526664640 is an apocalyptic number.

2526664640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2526664640 is an abundant number, since it is smaller than the sum of its proper divisors (3489956296).

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

2526664640 is an equidigital number, since it uses as much as digits as its factorization.

2526664640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7895844 (or 7895834 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 41.

The square root of 2526664640 is about 50265.9391636126. The cubic root of 2526664640 is about 1362.0170186110.

The spelling of 2526664640 in words is "two billion, five hundred twenty-six million, six hundred sixty-four thousand, six hundred forty".