1298873672639 has 2 divisors, whose sum is σ = 1298873672640. Its totient is φ = 1298873672638.

The previous prime is 1298873672623. The next prime is 1298873672687. The reversal of 1298873672639 is 9362763788921.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1298873672639 - 2⁴ = 1298873672623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1298873672609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649436836319 + 649436836320.

It is an arithmetic number, because the mean of its divisors is an integer number (649436836320).

Almost surely, 2^{1298873672639} is an apocalyptic number.

1298873672639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298873672639 is an equidigital number, since it uses as much as digits as its factorization.

1298873672639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 329204736, while the sum is 71.

The spelling of 1298873672639 in words is "one trillion, two hundred ninety-eight billion, eight hundred seventy-three million, six hundred seventy-two thousand, six hundred thirty-nine".