2516661612 has 36 divisors (see below), whose sum is σ = 6363653296. Its totient is φ = 838611360.

The previous prime is 2516661611. The next prime is 2516661643. The reversal of 2516661612 is 2161666152.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2516661611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120162 + ... + 139542.

Almost surely, 2^2516661612 is an apocalyptic number.

It is an amenable number.

2516661612 is an abundant number, since it is smaller than the sum of its proper divisors (3846991684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2516661612 is a wasteful number, since it uses less digits than its factorization.

2516661612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22998 (or 22993 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 2516661612 is about 50166.3394319338. The cubic root of 2516661612 is about 1360.2172396630.

It can be divided in two parts, 2516 and 661612, that added together give a triangular number (664128 = T₁₁₅₂).

The spelling of 2516661612 in words is "two billion, five hundred sixteen million, six hundred sixty-one thousand, six hundred twelve".