1266983753264 has 20 divisors (see below), whose sum is σ = 2511868954056. Its totient is φ = 618759507072.

The previous prime is 1266983753263. The next prime is 1266983753267. The reversal of 1266983753264 is 4623573896621.

It is a junction number, because it is equal to n+sod(n) for n = 1266983753197 and 1266983753206.

It is not an unprimeable number, because it can be changed into a prime (1266983753263) 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, 920772389 + ... + 920773764.

Almost surely, 2^{1266983753264} is an apocalyptic number.

It is an amenable number.

1266983753264 is a deficient number, since it is larger than the sum of its proper divisors (1244885200792).

1266983753264 is a wasteful number, since it uses less digits than its factorization.

1266983753264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841546204 (or 1841546198 counting only the distinct ones).

The product of its digits is 78382080, while the sum is 62.

The spelling of 1266983753264 in words is "one trillion, two hundred sixty-six billion, nine hundred eighty-three million, seven hundred fifty-three thousand, two hundred sixty-four".