1266437869422 has 64 divisors (see below), whose sum is σ = 2769093630720. Its totient is φ = 382942304000.

The previous prime is 1266437869421. The next prime is 1266437869441. The reversal of 1266437869422 is 2249687346621.

It is a happy number.

It is a super-2 number, since 2×1266437869422² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266437869421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137517154 + ... + 137526362.

It is an arithmetic number, because the mean of its divisors is an integer number (43267087980).

Almost surely, 2^{1266437869422} is an apocalyptic number.

1266437869422 is an abundant number, since it is smaller than the sum of its proper divisors (1502655761298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1266437869422 is a wasteful number, since it uses less digits than its factorization.

1266437869422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13489.

The product of its digits is 41803776, while the sum is 60.

The spelling of 1266437869422 in words is "one trillion, two hundred sixty-six billion, four hundred thirty-seven million, eight hundred sixty-nine thousand, four hundred twenty-two".