2941136561 has 16 divisors (see below), whose sum is σ = 3405447360. Its totient is φ = 2510407680.

The previous prime is 2941136557. The next prime is 2941136573. The reversal of 2941136561 is 1656311492.

It is not a de Polignac number, because 2941136561 - 2² = 2941136557 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 (2941136581) 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, 59585 + ... + 97121.

It is an arithmetic number, because the mean of its divisors is an integer number (212840460).

Almost surely, 2^2941136561 is an apocalyptic number.

It is an amenable number.

2941136561 is a deficient number, since it is larger than the sum of its proper divisors (464310799).

2941136561 is a wasteful number, since it uses less digits than its factorization.

2941136561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37984.

The product of its digits is 38880, while the sum is 38.

The square root of 2941136561 is about 54232.2465051928. The cubic root of 2941136561 is about 1432.7543310525.

The spelling of 2941136561 in words is "two billion, nine hundred forty-one million, one hundred thirty-six thousand, five hundred sixty-one".