11643392953 has 4 divisors (see below), whose sum is σ = 11643613668. Its totient is φ = 11643172240.

The previous prime is 11643392947. The next prime is 11643392977. The reversal of 11643392953 is 35929334611.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10938649744 + 704743209 = 104588^2 + 26547^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11643392953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11643392933) 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, 20475 + ... + 153967.

It is an arithmetic number, because the mean of its divisors is an integer number (2910903417).

Almost surely, 2^11643392953 is an apocalyptic number.

It is an amenable number.

11643392953 is a deficient number, since it is larger than the sum of its proper divisors (220715).

11643392953 is an equidigital number, since it uses as much as digits as its factorization.

11643392953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220714.

The product of its digits is 524880, while the sum is 46.

The spelling of 11643392953 in words is "eleven billion, six hundred forty-three million, three hundred ninety-two thousand, nine hundred fifty-three".