2196711561 has 24 divisors (see below), whose sum is σ = 3226652352. Its totient is φ = 1328351200.

The previous prime is 2196711509. The next prime is 2196711563. The reversal of 2196711561 is 1651176912.

It is not a de Polignac number, because 2196711561 - 2¹¹ = 2196709513 is a prime.

It is a super-3 number, since 3×2196711561³ (a number of 29 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2196711563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 160780 + ... + 173906.

It is an arithmetic number, because the mean of its divisors is an integer number (134443848).

Almost surely, 2^2196711561 is an apocalyptic number.

It is an amenable number.

2196711561 is a deficient number, since it is larger than the sum of its proper divisors (1029940791).

2196711561 is a wasteful number, since it uses less digits than its factorization.

2196711561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13613 (or 13602 counting only the distinct ones).

The product of its digits is 22680, while the sum is 39.

The square root of 2196711561 is about 46869.0896113846. The cubic root of 2196711561 is about 1299.9431061886.

The spelling of 2196711561 in words is "two billion, one hundred ninety-six million, seven hundred eleven thousand, five hundred sixty-one".