13021534401 has 4 divisors (see below), whose sum is σ = 17362045872. Its totient is φ = 8681022932.

The previous prime is 13021534367. The next prime is 13021534411. The reversal of 13021534401 is 10443512031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10443512031 = 3 ⋅3481170677.

It is a cyclic number.

It is not a de Polignac number, because 13021534401 - 2³¹ = 10874050753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13021534411) 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, 2170255731 + ... + 2170255736.

It is an arithmetic number, because the mean of its divisors is an integer number (4340511468).

Almost surely, 2^13021534401 is an apocalyptic number.

It is an amenable number.

13021534401 is a deficient number, since it is larger than the sum of its proper divisors (4340511471).

13021534401 is an equidigital number, since it uses as much as digits as its factorization.

13021534401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4340511470.

The product of its (nonzero) digits is 1440, while the sum is 24.

The spelling of 13021534401 in words is "thirteen billion, twenty-one million, five hundred thirty-four thousand, four hundred one".