11920580947 has 8 divisors (see below), whose sum is σ = 13017044160. Its totient is φ = 10826246760.

The previous prime is 11920580933. The next prime is 11920581047. The reversal of 11920580947 is 74908502911.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11920580947 is a prime.

It is a super-2 number, since 2×11920580947² (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 = 11920580897 and 11920580906.

It is not an unprimeable number, because it can be changed into a prime (11920583947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 520533 + ... + 542950.

It is an arithmetic number, because the mean of its divisors is an integer number (1627130520).

Almost surely, 2^11920580947 is an apocalyptic number.

11920580947 is a deficient number, since it is larger than the sum of its proper divisors (1096463213).

11920580947 is a wasteful number, since it uses less digits than its factorization.

11920580947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064513.

The product of its (nonzero) digits is 181440, while the sum is 46.

The spelling of 11920580947 in words is "eleven billion, nine hundred twenty million, five hundred eighty thousand, nine hundred forty-seven".