1280712082257 has 96 divisors (see below), whose sum is σ = 1949161999616. Its totient is φ = 809490931200.

The previous prime is 1280712082217. The next prime is 1280712082261. The reversal of 1280712082257 is 7522802170821.

1280712082257 is a `hidden beast` number, since 128 + 0 + 71 + 208 + 2 + 257 = 666.

It is not a de Polignac number, because 1280712082257 - 2¹² = 1280712078161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1280712082217) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2029654332 + ... + 2029654962.

Almost surely, 2^{1280712082257} is an apocalyptic number.

It is an amenable number.

1280712082257 is a deficient number, since it is larger than the sum of its proper divisors (668449917359).

1280712082257 is a wasteful number, since it uses less digits than its factorization.

1280712082257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511 (or 1508 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 45.

The spelling of 1280712082257 in words is "one trillion, two hundred eighty billion, seven hundred twelve million, eighty-two thousand, two hundred fifty-seven".