1266817970252 has 6 divisors (see below), whose sum is σ = 2216931447948. Its totient is φ = 633408985124.

The previous prime is 1266817970189. The next prime is 1266817970293. The reversal of 1266817970252 is 2520797186621.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158352246278 + ... + 158352246285.

It is an arithmetic number, because the mean of its divisors is an integer number (369488574658).

Almost surely, 2^{1266817970252} is an apocalyptic number.

It is an amenable number.

1266817970252 is a deficient number, since it is larger than the sum of its proper divisors (950113477696).

1266817970252 is a wasteful number, since it uses less digits than its factorization.

1266817970252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316704492567 (or 316704492565 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 56.

The spelling of 1266817970252 in words is "one trillion, two hundred sixty-six billion, eight hundred seventeen million, nine hundred seventy thousand, two hundred fifty-two".