13261314011666 has 8 divisors (see below), whose sum is σ = 22733681162880. Its totient is φ = 5683420290708.

The previous prime is 13261314011611. The next prime is 13261314011681. The reversal of 13261314011666 is 66611041316231.

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

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, 473618357546 + ... + 473618357573.

It is an arithmetic number, because the mean of its divisors is an integer number (2841710145360).

Almost surely, 2^{13261314011666} is an apocalyptic number.

13261314011666 is a deficient number, since it is larger than the sum of its proper divisors (9472367151214).

13261314011666 is an equidigital number, since it uses as much as digits as its factorization.

13261314011666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947236715128.

The product of its (nonzero) digits is 93312, while the sum is 41.

Adding to 13261314011666 its reverse (66611041316231), we get a palindrome (79872355327897).

The spelling of 13261314011666 in words is "thirteen trillion, two hundred sixty-one billion, three hundred fourteen million, eleven thousand, six hundred sixty-six".