1266177271994 has 16 divisors (see below), whose sum is σ = 1907598924000. Its totient is φ = 630316471344.

The previous prime is 1266177271981. The next prime is 1266177272021. The reversal of 1266177271994 is 4991727716621.

It is a super-2 number, since 2×1266177271994² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 916352 + ... + 1836315.

It is an arithmetic number, because the mean of its divisors is an integer number (119224932750).

Almost surely, 2^{1266177271994} is an apocalyptic number.

1266177271994 is a deficient number, since it is larger than the sum of its proper divisors (641421652006).

1266177271994 is a wasteful number, since it uses less digits than its factorization.

1266177271994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2753677.

The product of its digits is 16003008, while the sum is 62.

The spelling of 1266177271994 in words is "one trillion, two hundred sixty-six billion, one hundred seventy-seven million, two hundred seventy-one thousand, nine hundred ninety-four".