1266545163016 has 64 divisors (see below), whose sum is σ = 2886223190400. Its totient is φ = 508644375552.

The previous prime is 1266545162933. The next prime is 1266545163017. The reversal of 1266545163016 is 6103615456621.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1266545163017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2686806 + ... + 3122821.

It is an arithmetic number, because the mean of its divisors is an integer number (45097237350).

Almost surely, 2^{1266545163016} is an apocalyptic number.

It is an amenable number.

1266545163016 is an abundant number, since it is smaller than the sum of its proper divisors (1619678027384).

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

1266545163016 is a wasteful number, since it uses less digits than its factorization.

1266545163016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5809886 (or 5809882 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 1266545163016 in words is "one trillion, two hundred sixty-six billion, five hundred forty-five million, one hundred sixty-three thousand, sixteen".