6611615849 has 4 divisors (see below), whose sum is σ = 6637957200. Its totient is φ = 6585274500.

The previous prime is 6611615833. The next prime is 6611615869. The reversal of 6611615849 is 9485161166.

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 6611615849 - 2⁴ = 6611615833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6611615869) 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, 13170299 + ... + 13170800.

It is an arithmetic number, because the mean of its divisors is an integer number (1659489300).

Almost surely, 2^6611615849 is an apocalyptic number.

It is an amenable number.

6611615849 is a deficient number, since it is larger than the sum of its proper divisors (26341351).

6611615849 is a wasteful number, since it uses less digits than its factorization.

6611615849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26341350.

The product of its digits is 311040, while the sum is 47.

The square root of 6611615849 is about 81311.8432271708. The cubic root of 6611615849 is about 1876.8772522152.

The spelling of 6611615849 in words is "six billion, six hundred eleven million, six hundred fifteen thousand, eight hundred forty-nine".