12147711044854 has 64 divisors (see below), whose sum is σ = 23245190784000. Its totient is φ = 4624042262400.

The previous prime is 12147711044839. The next prime is 12147711044863. The reversal of 12147711044854 is 45844011774121.

It is a junction number, because it is equal to n+sod(n) for n = 12147711044798 and 12147711044807.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2939674 + ... + 5739085.

It is an arithmetic number, because the mean of its divisors is an integer number (363206106000).

Almost surely, 2^{12147711044854} is an apocalyptic number.

12147711044854 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12147711044854 is a deficient number, since it is larger than the sum of its proper divisors (11097479739146).

12147711044854 is a wasteful number, since it uses less digits than its factorization.

12147711044854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8678989.

The product of its (nonzero) digits is 1003520, while the sum is 49.

The spelling of 12147711044854 in words is "twelve trillion, one hundred forty-seven billion, seven hundred eleven million, forty-four thousand, eight hundred fifty-four".