2061155266 has 8 divisors (see below), whose sum is σ = 3150067644. Its totient is φ = 1011132720.

The previous prime is 2061155221. The next prime is 2061155287. The reversal of 2061155266 is 6625511602.

It can be written as a sum of positive squares in 2 ways, for example, as 2035904641 + 25250625 = 45121^2 + 5025^2 .

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

It is a super-2 number, since 2×2061155266² = 8496722061119061512, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9722325 + ... + 9722536.

Almost surely, 2^2061155266 is an apocalyptic number.

2061155266 is a deficient number, since it is larger than the sum of its proper divisors (1088912378).

2061155266 is a wasteful number, since it uses less digits than its factorization.

2061155266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19444916.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 2061155266 is about 45399.9478634062. The cubic root of 2061155266 is about 1272.6341396053.

Adding to 2061155266 its reverse (6625511602), we get a palindrome (8686666868).

The spelling of 2061155266 in words is "two billion, sixty-one million, one hundred fifty-five thousand, two hundred sixty-six".