13113315643 has 8 divisors (see below), whose sum is σ = 13315227968. Its totient is φ = 12911585544.

The previous prime is 13113315641. The next prime is 13113315661. The reversal of 13113315643 is 34651331131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13113315643 - 2¹ = 13113315641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13113315641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103180 + ... + 192022.

It is an arithmetic number, because the mean of its divisors is an integer number (1664403496).

Almost surely, 2^13113315643 is an apocalyptic number.

13113315643 is a deficient number, since it is larger than the sum of its proper divisors (201912325).

13113315643 is an equidigital number, since it uses as much as digits as its factorization.

13113315643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91113.

The product of its digits is 9720, while the sum is 31.

Adding to 13113315643 its reverse (34651331131), we get a palindrome (47764646774).

The spelling of 13113315643 in words is "thirteen billion, one hundred thirteen million, three hundred fifteen thousand, six hundred forty-three".