13261666446156 has 24 divisors (see below), whose sum is σ = 31233083595840. Its totient is φ = 4379241878992.

The previous prime is 13261666446137. The next prime is 13261666446173. The reversal of 13261666446156 is 65164466616231.

It is a junction number, because it is equal to n+sod(n) for n = 13261666446096 and 13261666446105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5164199046 + ... + 5164201613.

It is an arithmetic number, because the mean of its divisors is an integer number (1301378483160).

Almost surely, 2^{13261666446156} is an apocalyptic number.

It is an amenable number.

13261666446156 is an abundant number, since it is smaller than the sum of its proper divisors (17971417149684).

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

13261666446156 is a wasteful number, since it uses less digits than its factorization.

13261666446156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10328400773 (or 10328400771 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 57.

The spelling of 13261666446156 in words is "thirteen trillion, two hundred sixty-one billion, six hundred sixty-six million, four hundred forty-six thousand, one hundred fifty-six".