2661434661359 has 2 divisors, whose sum is σ = 2661434661360. Its totient is φ = 2661434661358.

The previous prime is 2661434661289. The next prime is 2661434661371. The reversal of 2661434661359 is 9531664341662.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2661434661359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2661434664359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330717330679 + 1330717330680.

It is an arithmetic number, because the mean of its divisors is an integer number (1330717330680).

Almost surely, 2^{2661434661359} is an apocalyptic number.

2661434661359 is a deficient number, since it is larger than the sum of its proper divisors (1).

2661434661359 is an equidigital number, since it uses as much as digits as its factorization.

2661434661359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16796160, while the sum is 56.

The spelling of 2661434661359 in words is "two trillion, six hundred sixty-one billion, four hundred thirty-four million, six hundred sixty-one thousand, three hundred fifty-nine".