2661520524112 has 20 divisors (see below), whose sum is σ = 5156728730356. Its totient is φ = 1330751819520.

The previous prime is 2661520524041. The next prime is 2661520524121. The reversal of 2661520524112 is 2114250251662.

It can be written as a sum of positive squares in 2 ways, for example, as 2126627223616 + 534893300496 = 1458296^2 + 731364^2 .

It is a super-3 number, since 3×2661520524112³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2654812 + ... + 3517252.

Almost surely, 2^{2661520524112} is an apocalyptic number.

It is an amenable number.

2661520524112 is a deficient number, since it is larger than the sum of its proper divisors (2495208206244).

2661520524112 is a wasteful number, since it uses less digits than its factorization.

2661520524112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055326 (or 1055320 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

Adding to 2661520524112 its reverse (2114250251662), we get a palindrome (4775770775774).

The spelling of 2661520524112 in words is "two trillion, six hundred sixty-one billion, five hundred twenty million, five hundred twenty-four thousand, one hundred twelve".