2061516061 has 4 divisors (see below), whose sum is σ = 2248926624. Its totient is φ = 1874105500.

The previous prime is 2061516053. The next prime is 2061516077. The reversal of 2061516061 is 1606151602.

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 a cyclic number.

It is not a de Polignac number, because 2061516061 - 2³ = 2061516053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061516001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93705265 + ... + 93705286.

It is an arithmetic number, because the mean of its divisors is an integer number (562231656).

Almost surely, 2^2061516061 is an apocalyptic number.

It is an amenable number.

2061516061 is a deficient number, since it is larger than the sum of its proper divisors (187410563).

2061516061 is a wasteful number, since it uses less digits than its factorization.

2061516061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187410562.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 2061516061 is about 45403.9212073142. The cubic root of 2061516061 is about 1272.7083913697.

Adding to 2061516061 its reverse (1606151602), we get a palindrome (3667667663).

It can be divided in two parts, 206151 and 6061, that added together give a palindrome (212212).

The spelling of 2061516061 in words is "two billion, sixty-one million, five hundred sixteen thousand, sixty-one".