2640442075 has 24 divisors (see below), whose sum is σ = 3325742496. Its totient is φ = 2079168000.

The previous prime is 2640442069. The next prime is 2640442087. The reversal of 2640442075 is 5702440462.

It is not a de Polignac number, because 2640442075 - 2²¹ = 2638344923 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2640442075.

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 23 ways as a sum of consecutive naturals, for example, 1939395 + ... + 1940755.

It is an arithmetic number, because the mean of its divisors is an integer number (138572604).

Almost surely, 2^2640442075 is an apocalyptic number.

2640442075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2640442075 is a deficient number, since it is larger than the sum of its proper divisors (685300421).

2640442075 is a wasteful number, since it uses less digits than its factorization.

2640442075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2535 (or 2530 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 34.

The square root of 2640442075 is about 51385.2320710922. The cubic root of 2640442075 is about 1382.1617862761.

The spelling of 2640442075 in words is "two billion, six hundred forty million, four hundred forty-two thousand, seventy-five".