12315566477947 has 8 divisors (see below), whose sum is σ = 12328668353792. Its totient is φ = 12302466105600.

The previous prime is 12315566477939. The next prime is 12315566477953. The reversal of 12315566477947 is 74977466551321.

It is a happy number.

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 12315566477947 - 2³ = 12315566477939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12315566477917) 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, 16413547 + ... + 17147467.

It is an arithmetic number, because the mean of its divisors is an integer number (1541083544224).

Almost surely, 2^{12315566477947} is an apocalyptic number.

12315566477947 is a deficient number, since it is larger than the sum of its proper divisors (13101875845).

12315566477947 is an equidigital number, since it uses as much as digits as its factorization.

12315566477947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751749.

The product of its digits is 266716800, while the sum is 67.

The spelling of 12315566477947 in words is "twelve trillion, three hundred fifteen billion, five hundred sixty-six million, four hundred seventy-seven thousand, nine hundred forty-seven".