1266741044420 has 12 divisors (see below), whose sum is σ = 2660156193324. Its totient is φ = 506696417760.

The previous prime is 1266741044417. The next prime is 1266741044441. The reversal of 1266741044420 is 244401476621.

It can be written as a sum of positive squares in 2 ways, for example, as 776626237696 + 490114806724 = 881264^2 + 700082^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31668526091 + ... + 31668526130.

It is an arithmetic number, because the mean of its divisors is an integer number (221679682777).

Almost surely, 2^{1266741044420} is an apocalyptic number.

1266741044420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1266741044420 is an abundant number, since it is smaller than the sum of its proper divisors (1393415148904).

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

1266741044420 is a wasteful number, since it uses less digits than its factorization.

1266741044420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63337052230 (or 63337052228 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 41.

The spelling of 1266741044420 in words is "one trillion, two hundred sixty-six billion, seven hundred forty-one million, forty-four thousand, four hundred twenty".