2640971075 has 12 divisors (see below), whose sum is σ = 3275785128. Its totient is φ = 2112144000.

The previous prime is 2640971071. The next prime is 2640971077. The reversal of 2640971075 is 5701790462.

It is not a de Polignac number, because 2640971075 - 2² = 2640971071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2640971071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80900 + ... + 108750.

It is an arithmetic number, because the mean of its divisors is an integer number (272982094).

Almost surely, 2^2640971075 is an apocalyptic number.

2640971075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2640971075 is a deficient number, since it is larger than the sum of its proper divisors (634814053).

2640971075 is a wasteful number, since it uses less digits than its factorization.

2640971075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31654 (or 31649 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 2640971075 is about 51390.3792066180. The cubic root of 2640971075 is about 1382.2540832907.

The spelling of 2640971075 in words is "two billion, six hundred forty million, nine hundred seventy-one thousand, seventy-five".