1266572057161 has 8 divisors (see below), whose sum is σ = 1333244088000. Its totient is φ = 1199901060720.

The previous prime is 1266572057143. The next prime is 1266572057171. The reversal of 1266572057161 is 1617502756621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1266572057161 - 2⁵ = 1266572057129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1266572057171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4503291 + ... + 4776271.

It is an arithmetic number, because the mean of its divisors is an integer number (166655511000).

Almost surely, 2^{1266572057161} is an apocalyptic number.

It is an amenable number.

1266572057161 is a deficient number, since it is larger than the sum of its proper divisors (66672030839).

1266572057161 is a wasteful number, since it uses less digits than its factorization.

1266572057161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517199.

The product of its (nonzero) digits is 1058400, while the sum is 49.

The spelling of 1266572057161 in words is "one trillion, two hundred sixty-six billion, five hundred seventy-two million, fifty-seven thousand, one hundred sixty-one".