12106510857947 has 16 divisors (see below), whose sum is σ = 13239453815520. Its totient is φ = 10978984166400.

The previous prime is 12106510857907. The next prime is 12106510857949. The reversal of 12106510857947 is 74975801560121.

12106510857947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12106510857947 - 2⁸ = 12106510857691 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12106510857892 and 12106510857901.

It is not an unprimeable number, because it can be changed into a prime (12106510857949) 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, 9322763 + ... + 10541675.

It is an arithmetic number, because the mean of its divisors is an integer number (827465863470).

Almost surely, 2^{12106510857947} is an apocalyptic number.

12106510857947 is a deficient number, since it is larger than the sum of its proper divisors (1132942957573).

12106510857947 is a wasteful number, since it uses less digits than its factorization.

12106510857947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221134.

The product of its (nonzero) digits is 4233600, while the sum is 56.

The spelling of 12106510857947 in words is "twelve trillion, one hundred six billion, five hundred ten million, eight hundred fifty-seven thousand, nine hundred forty-seven".