2061617261 has 8 divisors (see below), whose sum is σ = 2254540800. Its totient is φ = 1869611040.

The previous prime is 2061617209. The next prime is 2061617293. The reversal of 2061617261 is 1627161602.

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

It is not a de Polignac number, because 2061617261 - 2³⁰ = 987875437 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 (2061617861) 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 7 ways as a sum of consecutive naturals, for example, 224621 + ... + 233618.

It is an arithmetic number, because the mean of its divisors is an integer number (281817600).

Almost surely, 2^2061617261 is an apocalyptic number.

It is an amenable number.

2061617261 is a deficient number, since it is larger than the sum of its proper divisors (192923539).

2061617261 is a wasteful number, since it uses less digits than its factorization.

2061617261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458659.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 2061617261 is about 45405.0356348280. The cubic root of 2061617261 is about 1272.7292168169.

Adding to 2061617261 its reverse (1627161602), we get a palindrome (3688778863).

The spelling of 2061617261 in words is "two billion, sixty-one million, six hundred seventeen thousand, two hundred sixty-one".