2516661611 has 2 divisors, whose sum is σ = 2516661612. Its totient is φ = 2516661610.

The previous prime is 2516661601. The next prime is 2516661643. The reversal of 2516661611 is 1161666152.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2516661611 is a prime.

It is a super-2 number, since 2×2516661611² = 12667171328562230642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2516661601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1258330805 + 1258330806.

It is an arithmetic number, because the mean of its divisors is an integer number (1258330806).

Almost surely, 2^2516661611 is an apocalyptic number.

2516661611 is a deficient number, since it is larger than the sum of its proper divisors (1).

2516661611 is an equidigital number, since it uses as much as digits as its factorization.

2516661611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 35.

The square root of 2516661611 is about 50166.3394219670. The cubic root of 2516661611 is about 1360.2172394828.

The spelling of 2516661611 in words is "two billion, five hundred sixteen million, six hundred sixty-one thousand, six hundred eleven".