13235523607646 has 4 divisors (see below), whose sum is σ = 19853285411472. Its totient is φ = 6617761803822.

The previous prime is 13235523607639. The next prime is 13235523607681. The reversal of 13235523607646 is 64670632553231.

13235523607646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×13235523607646² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3308880901910 + ... + 3308880901913.

It is an arithmetic number, because the mean of its divisors is an integer number (4963321352868).

Almost surely, 2^{13235523607646} is an apocalyptic number.

13235523607646 is a deficient number, since it is larger than the sum of its proper divisors (6617761803826).

13235523607646 is an equidigital number, since it uses as much as digits as its factorization.

13235523607646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6617761803825.

The product of its (nonzero) digits is 16329600, while the sum is 53.

The spelling of 13235523607646 in words is "thirteen trillion, two hundred thirty-five billion, five hundred twenty-three million, six hundred seven thousand, six hundred forty-six".