6166049561 has 4 divisors (see below), whose sum is σ = 7046913792. Its totient is φ = 5285185332.

The previous prime is 6166049551. The next prime is 6166049579. The reversal of 6166049561 is 1659406616.

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 not a de Polignac number, because 6166049561 - 2⁶ = 6166049497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6166049551) 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, 440432105 + ... + 440432118.

It is an arithmetic number, because the mean of its divisors is an integer number (1761728448).

Almost surely, 2^6166049561 is an apocalyptic number.

It is an amenable number.

6166049561 is a deficient number, since it is larger than the sum of its proper divisors (880864231).

6166049561 is an equidigital number, since it uses as much as digits as its factorization.

6166049561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880864230.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 6166049561 is about 78524.1972961201. The cubic root of 6166049561 is about 1833.7311832508.

The spelling of 6166049561 in words is "six billion, one hundred sixty-six million, forty-nine thousand, five hundred sixty-one".