2261061817 has 8 divisors (see below), whose sum is σ = 2585371712. Its totient is φ = 1937077200.

The previous prime is 2261061799. The next prime is 2261061841. The reversal of 2261061817 is 7181601622.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2261061817 - 2⁷ = 2261061689 is a prime.

It is a super-2 number, since 2×2261061817² = 10224801080590682978, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2261061857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66234 + ... + 94387.

It is an arithmetic number, because the mean of its divisors is an integer number (323171464).

Almost surely, 2^2261061817 is an apocalyptic number.

It is an amenable number.

2261061817 is a deficient number, since it is larger than the sum of its proper divisors (324309895).

2261061817 is a wasteful number, since it uses less digits than its factorization.

2261061817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162639.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 2261061817 is about 47550.6237288219. The cubic root of 2261061817 is about 1312.5146069062.

The spelling of 2261061817 in words is "two billion, two hundred sixty-one million, sixty-one thousand, eight hundred seventeen".