11644345323 has 32 divisors (see below), whose sum is σ = 18657737280. Its totient is φ = 7134946560.

The previous prime is 11644345291. The next prime is 11644345357. The reversal of 11644345323 is 32354344611.

11644345323 is a `hidden beast` number, since 1 + 1 + 644 + 3 + 4 + 5 + 3 + 2 + 3 = 666.

It is not a de Polignac number, because 11644345323 - 2⁵ = 11644345291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11644345523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10593 + ... + 152973.

It is an arithmetic number, because the mean of its divisors is an integer number (583054290).

Almost surely, 2^11644345323 is an apocalyptic number.

11644345323 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11644345323 is a deficient number, since it is larger than the sum of its proper divisors (7013391957).

11644345323 is a wasteful number, since it uses less digits than its factorization.

11644345323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142636 (or 142630 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

Adding to 11644345323 its reverse (32354344611), we get a palindrome (43998689934).

The spelling of 11644345323 in words is "eleven billion, six hundred forty-four million, three hundred forty-five thousand, three hundred twenty-three".