13640115043 has 4 divisors (see below), whose sum is σ = 13826966008. Its totient is φ = 13453264080.

The previous prime is 13640115031. The next prime is 13640115059. The reversal of 13640115043 is 34051104631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13640115043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13640115443) 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, 93425373 + ... + 93425518.

It is an arithmetic number, because the mean of its divisors is an integer number (3456741502).

Almost surely, 2^13640115043 is an apocalyptic number.

13640115043 is a deficient number, since it is larger than the sum of its proper divisors (186850965).

13640115043 is an equidigital number, since it uses as much as digits as its factorization.

13640115043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186850964.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 13640115043 its reverse (34051104631), we get a palindrome (47691219674).

The spelling of 13640115043 in words is "thirteen billion, six hundred forty million, one hundred fifteen thousand, forty-three".