2640231066 has 16 divisors (see below), whose sum is σ = 5760504288. Its totient is φ = 800070000.

The previous prime is 2640231049. The next prime is 2640231071. The reversal of 2640231066 is 6601320462.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20001685 + ... + 20001816.

It is an arithmetic number, because the mean of its divisors is an integer number (360031518).

Almost surely, 2^2640231066 is an apocalyptic number.

2640231066 is an abundant number, since it is smaller than the sum of its proper divisors (3120273222).

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

2640231066 is a wasteful number, since it uses less digits than its factorization.

2640231066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40003517.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 2640231066 is about 51383.1788234243. The cubic root of 2640231066 is about 1382.1249671454.

The spelling of 2640231066 in words is "two billion, six hundred forty million, two hundred thirty-one thousand, sixty-six".