1266234654616 has 16 divisors (see below), whose sum is σ = 2513848211640. Its totient is φ = 595875131520.

The previous prime is 1266234654613. The next prime is 1266234654649. The reversal of 1266234654616 is 6164564326621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266234654613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4655274330 + ... + 4655274601.

Almost surely, 2^{1266234654616} is an apocalyptic number.

It is an amenable number.

1266234654616 is a deficient number, since it is larger than the sum of its proper divisors (1247613557024).

1266234654616 is a wasteful number, since it uses less digits than its factorization.

1266234654616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9310548954 (or 9310548950 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 52.

The spelling of 1266234654616 in words is "one trillion, two hundred sixty-six billion, two hundred thirty-four million, six hundred fifty-four thousand, six hundred sixteen".