1266572057159 has 4 divisors (see below), whose sum is σ = 1267166973360. Its totient is φ = 1265977140960.

The previous prime is 1266572057143. The next prime is 1266572057171. The reversal of 1266572057159 is 9517502756621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1266572057159 - 2⁴ = 1266572057143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266572057119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297454907 + ... + 297459164.

It is an arithmetic number, because the mean of its divisors is an integer number (316791743340).

Almost surely, 2^{1266572057159} is an apocalyptic number.

1266572057159 is a deficient number, since it is larger than the sum of its proper divisors (594916201).

1266572057159 is an equidigital number, since it uses as much as digits as its factorization.

1266572057159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594916200.

The product of its (nonzero) digits is 7938000, while the sum is 56.

The spelling of 1266572057159 in words is "one trillion, two hundred sixty-six billion, five hundred seventy-two million, fifty-seven thousand, one hundred fifty-nine".