2661276859 has 2 divisors, whose sum is σ = 2661276860. Its totient is φ = 2661276858.

The previous prime is 2661276853. The next prime is 2661276869. The reversal of 2661276859 is 9586721662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2661276859 - 2⁷ = 2661276731 is a prime.

It is a super-3 number, since 3×2661276859³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2661276853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330638429 + 1330638430.

It is an arithmetic number, because the mean of its divisors is an integer number (1330638430).

Almost surely, 2^2661276859 is an apocalyptic number.

2661276859 is a deficient number, since it is larger than the sum of its proper divisors (1).

2661276859 is an equidigital number, since it uses as much as digits as its factorization.

2661276859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 52.

The square root of 2661276859 is about 51587.5649648246. The cubic root of 2661276859 is about 1385.7876475729.

The spelling of 2661276859 in words is "two billion, six hundred sixty-one million, two hundred seventy-six thousand, eight hundred fifty-nine".