1280257209327 has 8 divisors (see below), whose sum is σ = 1708580002816. Its totient is φ = 852719611032.

The previous prime is 1280257209293. The next prime is 1280257209331. The reversal of 1280257209327 is 7239027520821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1280257209327 - 2⁶ = 1280257209263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280257209347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196294993 + ... + 196301514.

It is an arithmetic number, because the mean of its divisors is an integer number (213572500352).

Almost surely, 2^{1280257209327} is an apocalyptic number.

1280257209327 is a deficient number, since it is larger than the sum of its proper divisors (428322793489).

1280257209327 is a wasteful number, since it uses less digits than its factorization.

1280257209327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392597597.

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 1280257209327 in words is "one trillion, two hundred eighty billion, two hundred fifty-seven million, two hundred nine thousand, three hundred twenty-seven".