13621653271 has 2 divisors, whose sum is σ = 13621653272. Its totient is φ = 13621653270.

The previous prime is 13621653259. The next prime is 13621653313. The reversal of 13621653271 is 17235612631.

It is a weak prime.

It is an emirp because it is prime and its reverse (17235612631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13621653271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13621653271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13621653371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6810826635 + 6810826636.

It is an arithmetic number, because the mean of its divisors is an integer number (6810826636).

Almost surely, 2^13621653271 is an apocalyptic number.

13621653271 is a deficient number, since it is larger than the sum of its proper divisors (1).

13621653271 is an equidigital number, since it uses as much as digits as its factorization.

13621653271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 37.

The spelling of 13621653271 in words is "thirteen billion, six hundred twenty-one million, six hundred fifty-three thousand, two hundred seventy-one".