6111667261 has 4 divisors (see below), whose sum is σ = 6984762592. Its totient is φ = 5238571932.

The previous prime is 6111667259. The next prime is 6111667273. The reversal of 6111667261 is 1627661116.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6111667261 - 2¹ = 6111667259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6111667261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6111667241) 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, 436547655 + ... + 436547668.

It is an arithmetic number, because the mean of its divisors is an integer number (1746190648).

Almost surely, 2^6111667261 is an apocalyptic number.

It is an amenable number.

6111667261 is a deficient number, since it is larger than the sum of its proper divisors (873095331).

6111667261 is an equidigital number, since it uses as much as digits as its factorization.

6111667261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873095330.

The product of its digits is 18144, while the sum is 37.

The square root of 6111667261 is about 78177.1530627715. The cubic root of 6111667261 is about 1828.3243104841.

The spelling of 6111667261 in words is "six billion, one hundred eleven million, six hundred sixty-seven thousand, two hundred sixty-one".