1289045697485 has 48 divisors (see below), whose sum is σ = 1956667579776. Its totient is φ = 793871062272.

The previous prime is 1289045697451. The next prime is 1289045697509. The reversal of 1289045697485 is 5847965409821.

It is not a de Polignac number, because 1289045697485 - 2²⁴ = 1289028920269 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 411827 + ... + 1657616.

It is an arithmetic number, because the mean of its divisors is an integer number (40763907912).

Almost surely, 2^{1289045697485} is an apocalyptic number.

It is an amenable number.

1289045697485 is a deficient number, since it is larger than the sum of its proper divisors (667621882291).

1289045697485 is a wasteful number, since it uses less digits than its factorization.

1289045697485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069542 (or 2069505 counting only the distinct ones).

The product of its (nonzero) digits is 174182400, while the sum is 68.

The spelling of 1289045697485 in words is "one trillion, two hundred eighty-nine billion, forty-five million, six hundred ninety-seven thousand, four hundred eighty-five".