1260897549697 has 2 divisors, whose sum is σ = 1260897549698. Its totient is φ = 1260897549696.

The previous prime is 1260897549641. The next prime is 1260897549719. The reversal of 1260897549697 is 7969457980621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1258085262736 + 2812286961 = 1121644^2 + 53031^2 .

It is a cyclic number.

It is not a de Polignac number, because 1260897549697 - 2²³ = 1260889161089 is a prime.

It is not a weakly prime, because it can be changed into another prime (1260897549617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630448774848 + 630448774849.

It is an arithmetic number, because the mean of its divisors is an integer number (630448774849).

Almost surely, 2^{1260897549697} is an apocalyptic number.

It is an amenable number.

1260897549697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1260897549697 is an equidigital number, since it uses as much as digits as its factorization.

1260897549697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 411505920, while the sum is 73.

The spelling of 1260897549697 in words is "one trillion, two hundred sixty billion, eight hundred ninety-seven million, five hundred forty-nine thousand, six hundred ninety-seven".