2661172012 has 6 divisors (see below), whose sum is σ = 4657051028. Its totient is φ = 1330586004.

The previous prime is 2661171991. The next prime is 2661172039. The reversal of 2661172012 is 2102711662.

2661172012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332646498 + ... + 332646505.

Almost surely, 2^2661172012 is an apocalyptic number.

It is an amenable number.

2661172012 is a deficient number, since it is larger than the sum of its proper divisors (1995879016).

2661172012 is a wasteful number, since it uses less digits than its factorization.

2661172012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665293007 (or 665293005 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 2661172012 is about 51586.5487506191. The cubic root of 2661172012 is about 1385.7694485913.

Adding to 2661172012 its reverse (2102711662), we get a palindrome (4763883674).

The spelling of 2661172012 in words is "two billion, six hundred sixty-one million, one hundred seventy-two thousand, twelve".