13261628180266 has 4 divisors (see below), whose sum is σ = 19892442270402. Its totient is φ = 6630814090132.

The previous prime is 13261628180243. The next prime is 13261628180341. The reversal of 13261628180266 is 66208182616231.

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

It can be written as a sum of positive squares in only one way, i.e., 11680133299641 + 1581494880625 = 3417621^2 + 1257575^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3315407045065 + ... + 3315407045068.

Almost surely, 2^{13261628180266} is an apocalyptic number.

13261628180266 is a deficient number, since it is larger than the sum of its proper divisors (6630814090136).

13261628180266 is an equidigital number, since it uses as much as digits as its factorization.

13261628180266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6630814090135.

The product of its (nonzero) digits is 1990656, while the sum is 52.

The spelling of 13261628180266 in words is "thirteen trillion, two hundred sixty-one billion, six hundred twenty-eight million, one hundred eighty thousand, two hundred sixty-six".