12305620661047 has 16 divisors (see below), whose sum is σ = 14094806766912. Its totient is φ = 10524246163200.

The previous prime is 12305620661029. The next prime is 12305620661051. The reversal of 12305620661047 is 74016602650321.

It is a de Polignac number, because none of the positive numbers 2^k-12305620661047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12305620660994 and 12305620661012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12305620661017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157521297 + ... + 157599397.

It is an arithmetic number, because the mean of its divisors is an integer number (880925422932).

Almost surely, 2^{12305620661047} is an apocalyptic number.

12305620661047 is a deficient number, since it is larger than the sum of its proper divisors (1789186105865).

12305620661047 is an equidigital number, since it uses as much as digits as its factorization.

12305620661047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127818.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 12305620661047 in words is "twelve trillion, three hundred five billion, six hundred twenty million, six hundred sixty-one thousand, forty-seven".