13653143997 has 4 divisors (see below), whose sum is σ = 18204192000. Its totient is φ = 9102095996.

The previous prime is 13653143983. The next prime is 13653144007. The reversal of 13653143997 is 79934135631.

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 13653143997 - 2¹² = 13653139901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13653143927) 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, 2275523997 + ... + 2275524002.

It is an arithmetic number, because the mean of its divisors is an integer number (4551048000).

Almost surely, 2^13653143997 is an apocalyptic number.

It is an amenable number.

13653143997 is a deficient number, since it is larger than the sum of its proper divisors (4551048003).

13653143997 is an equidigital number, since it uses as much as digits as its factorization.

13653143997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4551048002.

The product of its digits is 1837080, while the sum is 51.

The spelling of 13653143997 in words is "thirteen billion, six hundred fifty-three million, one hundred forty-three thousand, nine hundred ninety-seven".