2750637661 has 2 divisors, whose sum is σ = 2750637662. Its totient is φ = 2750637660.

The previous prime is 2750637653. The next prime is 2750637671. The reversal of 2750637661 is 1667360572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2468599225 + 282038436 = 49685^2 + 16794^2 .

It is a cyclic number.

It is not a de Polignac number, because 2750637661 - 2³ = 2750637653 is a prime.

It is a super-2 number, since 2×2750637661² = 15132015084223101842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2750637611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1375318830 + 1375318831.

It is an arithmetic number, because the mean of its divisors is an integer number (1375318831).

Almost surely, 2^2750637661 is an apocalyptic number.

It is an amenable number.

2750637661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2750637661 is an equidigital number, since it uses as much as digits as its factorization.

2750637661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 43.

The square root of 2750637661 is about 52446.5219151852. The cubic root of 2750637661 is about 1401.1279449106.

The spelling of 2750637661 in words is "two billion, seven hundred fifty million, six hundred thirty-seven thousand, six hundred sixty-one".