2640179005 has 4 divisors (see below), whose sum is σ = 3168214812. Its totient is φ = 2112143200.

The previous prime is 2640178943. The next prime is 2640179041. The reversal of 2640179005 is 5009710462.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1386594169 + 1253584836 = 37237^2 + 35406^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2640179005 is a prime.

It is a Duffinian number.

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, 264017896 + ... + 264017905.

It is an arithmetic number, because the mean of its divisors is an integer number (792053703).

Almost surely, 2^2640179005 is an apocalyptic number.

It is an amenable number.

2640179005 is a deficient number, since it is larger than the sum of its proper divisors (528035807).

2640179005 is an equidigital number, since it uses as much as digits as its factorization.

2640179005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528035806.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 2640179005 is about 51382.6722251772. The cubic root of 2640179005 is about 1382.1158826778.

Adding to 2640179005 its reverse (5009710462), we get a palindrome (7649889467).

The spelling of 2640179005 in words is "two billion, six hundred forty million, one hundred seventy-nine thousand, five".