1297427238799 has 2 divisors, whose sum is σ = 1297427238800. Its totient is φ = 1297427238798.

The previous prime is 1297427238673. The next prime is 1297427238823. The reversal of 1297427238799 is 9978327247921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1297427238799 - 2²⁷ = 1297293021071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1297427638799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648713619399 + 648713619400.

It is an arithmetic number, because the mean of its divisors is an integer number (648713619400).

Almost surely, 2^{1297427238799} is an apocalyptic number.

1297427238799 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297427238799 is an equidigital number, since it uses as much as digits as its factorization.

1297427238799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192036096, while the sum is 70.

The spelling of 1297427238799 in words is "one trillion, two hundred ninety-seven billion, four hundred twenty-seven million, two hundred thirty-eight thousand, seven hundred ninety-nine".