13263445226646 has 72 divisors (see below), whose sum is σ = 30250021824984. Its totient is φ = 4360584417120.

The previous prime is 13263445226611. The next prime is 13263445226741. The reversal of 13263445226646 is 64662254436231.

13263445226646 is a `hidden beast` number, since 1 + 3 + 26 + 34 + 4 + 522 + 6 + 64 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13263445226592 and 13263445226601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5965240 + ... + 7881051.

Almost surely, 2^{13263445226646} is an apocalyptic number.

13263445226646 is an abundant number, since it is smaller than the sum of its proper divisors (16986576598338).

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

13263445226646 is an frugal number, since it uses more digits than its factorization.

13263445226646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13846390 (or 13846369 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 54.

The spelling of 13263445226646 in words is "thirteen trillion, two hundred sixty-three billion, four hundred forty-five million, two hundred twenty-six thousand, six hundred forty-six".