2661111662 has 16 divisors (see below), whose sum is σ = 4436709552. Its totient is φ = 1186773120.

The previous prime is 2661111653. The next prime is 2661111727.

2661111662 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1139963 + ... + 1142294.

It is an arithmetic number, because the mean of its divisors is an integer number (277294347).

Almost surely, 2^2661111662 is an apocalyptic number.

2661111662 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2661111662 is a deficient number, since it is larger than the sum of its proper divisors (1775597890).

2661111662 is a wasteful number, since it uses less digits than its factorization.

2661111662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2282323.

The product of its digits is 5184, while the sum is 32.

The square root of 2661111662 is about 51585.9638079972. The cubic root of 2661111662 is about 1385.7589730291.

The spelling of 2661111662 in words is "two billion, six hundred sixty-one million, one hundred eleven thousand, six hundred sixty-two".