11712347947 has 8 divisors (see below), whose sum is σ = 11751717680. Its totient is φ = 11673002880.

The previous prime is 11712347939. The next prime is 11712347981. The reversal of 11712347947 is 74974321711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11712347947 - 2³ = 11712347939 is a prime.

It is a super-2 number, since 2×11712347947² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11712347897 and 11712347906.

It is not an unprimeable number, because it can be changed into a prime (11712347347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1720783 + ... + 1727575.

It is an arithmetic number, because the mean of its divisors is an integer number (1468964710).

Almost surely, 2^11712347947 is an apocalyptic number.

11712347947 is a deficient number, since it is larger than the sum of its proper divisors (39369733).

11712347947 is an equidigital number, since it uses as much as digits as its factorization.

11712347947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12333.

The product of its digits is 296352, while the sum is 46.

The spelling of 11712347947 in words is "eleven billion, seven hundred twelve million, three hundred forty-seven thousand, nine hundred forty-seven".