12128514546 has 16 divisors (see below), whose sum is σ = 24278642784. Its totient is φ = 4039235904.

The previous prime is 12128514539. The next prime is 12128514599. The reversal of 12128514546 is 64541582121.

It is a happy number.

It is a super-2 number, since 2×12128514546² (a number of 21 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 893271 + ... + 906746.

It is an arithmetic number, because the mean of its divisors is an integer number (1517415174).

Almost surely, 2^12128514546 is an apocalyptic number.

12128514546 is an abundant number, since it is smaller than the sum of its proper divisors (12150128238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12128514546 is a wasteful number, since it uses less digits than its factorization.

12128514546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801145.

The product of its digits is 76800, while the sum is 39.

The spelling of 12128514546 in words is "twelve billion, one hundred twenty-eight million, five hundred fourteen thousand, five hundred forty-six".