6611473661 has 16 divisors (see below), whose sum is σ = 7163251200. Its totient is φ = 6065980608.

The previous prime is 6611473619. The next prime is 6611473663. The reversal of 6611473661 is 1663741166.

It is a cyclic number.

It is not a de Polignac number, because 6611473661 - 2²⁶ = 6544364797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6611473663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1673090 + ... + 1677036.

It is an arithmetic number, because the mean of its divisors is an integer number (447703200).

Almost surely, 2^6611473661 is an apocalyptic number.

It is an amenable number.

6611473661 is a deficient number, since it is larger than the sum of its proper divisors (551777539).

6611473661 is a wasteful number, since it uses less digits than its factorization.

6611473661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4708.

The product of its digits is 108864, while the sum is 41.

The square root of 6611473661 is about 81310.9688848928. The cubic root of 6611473661 is about 1876.8637975449.

The spelling of 6611473661 in words is "six billion, six hundred eleven million, four hundred seventy-three thousand, six hundred sixty-one".