2660120129 has 2 divisors, whose sum is σ = 2660120130. Its totient is φ = 2660120128.

The previous prime is 2660120119. The next prime is 2660120167. The reversal of 2660120129 is 9210210662.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2598654529 + 61465600 = 50977^2 + 7840^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2660120129 is a prime.

It is not a weakly prime, because it can be changed into another prime (2660120119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330060064 + 1330060065.

It is an arithmetic number, because the mean of its divisors is an integer number (1330060065).

Almost surely, 2^2660120129 is an apocalyptic number.

It is an amenable number.

2660120129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2660120129 is an equidigital number, since it uses as much as digits as its factorization.

2660120129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 2660120129 is about 51576.3524204649. The cubic root of 2660120129 is about 1385.5868398988.

The spelling of 2660120129 in words is "two billion, six hundred sixty million, one hundred twenty thousand, one hundred twenty-nine".