2661231119 has 4 divisors (see below), whose sum is σ = 2817774144. Its totient is φ = 2504688096.

The previous prime is 2661231109. The next prime is 2661231121. The reversal of 2661231119 is 9111321662.

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

It is a cyclic number.

It is not a de Polignac number, because 2661231119 - 2²⁸ = 2392795663 is a prime.

It is a super-2 number, since 2×2661231119² = 14164302137467984322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661231109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78271487 + ... + 78271520.

It is an arithmetic number, because the mean of its divisors is an integer number (704443536).

Almost surely, 2^2661231119 is an apocalyptic number.

2661231119 is a deficient number, since it is larger than the sum of its proper divisors (156543025).

2661231119 is a wasteful number, since it uses less digits than its factorization.

2661231119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156543024.

The product of its digits is 3888, while the sum is 32.

The square root of 2661231119 is about 51587.1216390293. The cubic root of 2661231119 is about 1385.7797082398.

The spelling of 2661231119 in words is "two billion, six hundred sixty-one million, two hundred thirty-one thousand, one hundred nineteen".