11747432409 has 4 divisors (see below), whose sum is σ = 15663243216. Its totient is φ = 7831621604.

The previous prime is 11747432407. The next prime is 11747432419. The reversal of 11747432409 is 90423474711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11747432409 - 2¹ = 11747432407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11747432407) 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, 1957905399 + ... + 1957905404.

It is an arithmetic number, because the mean of its divisors is an integer number (3915810804).

Almost surely, 2^11747432409 is an apocalyptic number.

It is an amenable number.

11747432409 is a deficient number, since it is larger than the sum of its proper divisors (3915810807).

11747432409 is an equidigital number, since it uses as much as digits as its factorization.

11747432409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3915810806.

The product of its (nonzero) digits is 169344, while the sum is 42.

The spelling of 11747432409 in words is "eleven billion, seven hundred forty-seven million, four hundred thirty-two thousand, four hundred nine".