2661030377 has 2 divisors, whose sum is σ = 2661030378. Its totient is φ = 2661030376.

The previous prime is 2661030353. The next prime is 2661030397. The reversal of 2661030377 is 7730301662.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2578202176 + 82828201 = 50776^2 + 9101^2 .

It is a cyclic number.

It is not a de Polignac number, because 2661030377 - 2³⁰ = 1587288553 is a prime.

It is not a weakly prime, because it can be changed into another prime (2661030397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330515188 + 1330515189.

It is an arithmetic number, because the mean of its divisors is an integer number (1330515189).

Almost surely, 2^2661030377 is an apocalyptic number.

It is an amenable number.

2661030377 is a deficient number, since it is larger than the sum of its proper divisors (1).

2661030377 is an equidigital number, since it uses as much as digits as its factorization.

2661030377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 2661030377 is about 51585.1759423189. The cubic root of 2661030377 is about 1385.7448633162.

The spelling of 2661030377 in words is "two billion, six hundred sixty-one million, thirty thousand, three hundred seventy-seven".