1266941339245 has 16 divisors (see below), whose sum is σ = 1536087473280. Its totient is φ = 1003097736000.

The previous prime is 1266941339233. The next prime is 1266941339269. The reversal of 1266941339245 is 5429331496621.

It is a happy number.

It is not a de Polignac number, because 1266941339245 - 2³⁷ = 1129502385773 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2915991 + ... + 3322180.

It is an arithmetic number, because the mean of its divisors is an integer number (96005467080).

Almost surely, 2^{1266941339245} is an apocalyptic number.

It is an amenable number.

1266941339245 is a deficient number, since it is larger than the sum of its proper divisors (269146134035).

1266941339245 is a wasteful number, since it uses less digits than its factorization.

1266941339245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6238596.

The product of its digits is 8398080, while the sum is 55.

The spelling of 1266941339245 in words is "one trillion, two hundred sixty-six billion, nine hundred forty-one million, three hundred thirty-nine thousand, two hundred forty-five".