13640324145 has 32 divisors (see below), whose sum is σ = 25802392320. Its totient is φ = 6020555520.

The previous prime is 13640324101. The next prime is 13640324177. The reversal of 13640324145 is 54142304631.

It is a happy number.

It is not a de Polignac number, because 13640324145 - 2⁶ = 13640324081 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2236746 + ... + 2242835.

It is an arithmetic number, because the mean of its divisors is an integer number (806324760).

Almost surely, 2^13640324145 is an apocalyptic number.

13640324145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13640324145 is a deficient number, since it is larger than the sum of its proper divisors (12162068175).

13640324145 is a wasteful number, since it uses less digits than its factorization.

13640324145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4479625.

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 13640324145 its reverse (54142304631), we get a palindrome (67782628776).

The spelling of 13640324145 in words is "thirteen billion, six hundred forty million, three hundred twenty-four thousand, one hundred forty-five".