2640412135 has 8 divisors (see below), whose sum is σ = 3270704256. Its totient is φ = 2044189920.

The previous prime is 2640412129. The next prime is 2640412139. The reversal of 2640412135 is 5312140462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2640412135 - 2⁹ = 2640411623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640412139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8517304 + ... + 8517613.

It is an arithmetic number, because the mean of its divisors is an integer number (408838032).

Almost surely, 2^2640412135 is an apocalyptic number.

2640412135 is a deficient number, since it is larger than the sum of its proper divisors (630292121).

2640412135 is a wasteful number, since it uses less digits than its factorization.

2640412135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17034953.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 2640412135 is about 51384.9407414273. The cubic root of 2640412135 is about 1382.1565621408.

Adding to 2640412135 its reverse (5312140462), we get a palindrome (7952552597).

The spelling of 2640412135 in words is "two billion, six hundred forty million, four hundred twelve thousand, one hundred thirty-five".