1266457211000 has 192 divisors, whose sum is σ = 3280216474080. Its totient is φ = 456050918400.

The previous prime is 1266457210957. The next prime is 1266457211021. The reversal of 1266457211000 is 1127546621.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 8922587 + ... + 9063413.

Almost surely, 2^{1266457211000} is an apocalyptic number.

1266457211000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1266457211000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1640108237040).

1266457211000 is an abundant number, since it is smaller than the sum of its proper divisors (2013759263080).

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

1266457211000 is a wasteful number, since it uses less digits than its factorization.

1266457211000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140911 (or 140874 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 1266457211000 in words is "one trillion, two hundred sixty-six billion, four hundred fifty-seven million, two hundred eleven thousand".