13621608001 has 4 divisors (see below), whose sum is σ = 13621842900. Its totient is φ = 13621373104.

The previous prime is 13621607977. The next prime is 13621608017. The reversal of 13621608001 is 10080612631.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10080612631 = 107 ⋅94211333.

It can be written as a sum of positive squares in 2 ways, for example, as 10140490000 + 3481118001 = 100700^2 + 59001^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13621608001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13621608031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39015 + ... + 169603.

It is an arithmetic number, because the mean of its divisors is an integer number (3405460725).

Almost surely, 2^13621608001 is an apocalyptic number.

It is an amenable number.

13621608001 is a deficient number, since it is larger than the sum of its proper divisors (234899).

13621608001 is a wasteful number, since it uses less digits than its factorization.

13621608001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234898.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 13621608001 in words is "thirteen billion, six hundred twenty-one million, six hundred eight thousand, one".