2661206135 has 8 divisors (see below), whose sum is σ = 3649654176. Its totient is φ = 1824827040.

The previous prime is 2661206131. The next prime is 2661206137. The reversal of 2661206135 is 5316021662.

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

It is not a de Polignac number, because 2661206135 - 2² = 2661206131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661206131) by changing a digit.

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, 38017196 + ... + 38017265.

It is an arithmetic number, because the mean of its divisors is an integer number (456206772).

Almost surely, 2^2661206135 is an apocalyptic number.

2661206135 is a deficient number, since it is larger than the sum of its proper divisors (988448041).

2661206135 is an equidigital number, since it uses as much as digits as its factorization.

2661206135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76034473.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 2661206135 is about 51586.8794850008. The cubic root of 2661206135 is about 1385.7753715967.

Adding to 2661206135 its reverse (5316021662), we get a palindrome (7977227797).

The spelling of 2661206135 in words is "two billion, six hundred sixty-one million, two hundred six thousand, one hundred thirty-five".