1280661632119 has 2 divisors, whose sum is σ = 1280661632120. Its totient is φ = 1280661632118.

The previous prime is 1280661632053. The next prime is 1280661632123. The reversal of 1280661632119 is 9112361660821.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1280661632119 is a prime.

It is a super-2 number, since 2×1280661632119² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1280661632189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 640330816059 + 640330816060.

It is an arithmetic number, because the mean of its divisors is an integer number (640330816060).

Almost surely, 2^{1280661632119} is an apocalyptic number.

1280661632119 is a deficient number, since it is larger than the sum of its proper divisors (1).

1280661632119 is an equidigital number, since it uses as much as digits as its factorization.

1280661632119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 46.

The spelling of 1280661632119 in words is "one trillion, two hundred eighty billion, six hundred sixty-one million, six hundred thirty-two thousand, one hundred nineteen".