13584953661 has 4 divisors (see below), whose sum is σ = 18113271552. Its totient is φ = 9056635772.

The previous prime is 13584953651. The next prime is 13584953663. The reversal of 13584953661 is 16635948531.

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.

It is a cyclic number.

It is not a de Polignac number, because 13584953661 - 2⁷ = 13584953533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13584953663) 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, 2264158941 + ... + 2264158946.

It is an arithmetic number, because the mean of its divisors is an integer number (4528317888).

Almost surely, 2^13584953661 is an apocalyptic number.

It is an amenable number.

13584953661 is a deficient number, since it is larger than the sum of its proper divisors (4528317891).

13584953661 is an equidigital number, since it uses as much as digits as its factorization.

13584953661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4528317890.

The product of its digits is 2332800, while the sum is 51.

The spelling of 13584953661 in words is "thirteen billion, five hundred eighty-four million, nine hundred fifty-three thousand, six hundred sixty-one".