20123534828016 has 60 divisors (see below), whose sum is σ = 56354306405800. Its totient is φ = 6703514432640.

The previous prime is 20123534828003. The next prime is 20123534828041. The reversal of 20123534828016 is 61082843532102.

20123534828016 is a `hidden beast` number, since 2 + 0 + 1 + 2 + 353 + 4 + 8 + 280 + 16 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44885650 + ... + 45331761.

Almost surely, 2^{20123534828016} is an apocalyptic number.

It is an amenable number.

20123534828016 is an abundant number, since it is smaller than the sum of its proper divisors (36230771577784).

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

20123534828016 is a wasteful number, since it uses less digits than its factorization.

20123534828016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90218974 (or 90218965 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 20123534828016 in words is "twenty trillion, one hundred twenty-three billion, five hundred thirty-four million, eight hundred twenty-eight thousand, sixteen".