1285266608064 has 42 divisors (see below), whose sum is σ = 3683984671640. Its totient is φ = 428422202496.

The previous prime is 1285266608063. The next prime is 1285266608077. The reversal of 1285266608064 is 4608066625821.

It is a self number, because there is not a number n which added to its sum of digits gives 1285266608064.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285266608063) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1115682244 + ... + 1115683395.

Almost surely, 2^{1285266608064} is an apocalyptic number.

It is an amenable number.

1285266608064 is an abundant number, since it is smaller than the sum of its proper divisors (2398718063576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1285266608064 is a wasteful number, since it uses less digits than its factorization.

1285266608064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231365657 (or 2231365644 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 54.

The spelling of 1285266608064 in words is "one trillion, two hundred eighty-five billion, two hundred sixty-six million, six hundred eight thousand, sixty-four".