20123514531043 has 16 divisors (see below), whose sum is σ = 25130802654720. Its totient is φ = 15654569688000.

The previous prime is 20123514531031. The next prime is 20123514531049. The reversal of 20123514531043 is 34013541532102.

It is a cyclic number.

It is not a de Polignac number, because 20123514531043 - 2²⁵ = 20123480976611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20123514531049) 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, 217378303 + ... + 217470856.

It is an arithmetic number, because the mean of its divisors is an integer number (1570675165920).

Almost surely, 2^{20123514531043} is an apocalyptic number.

20123514531043 is a deficient number, since it is larger than the sum of its proper divisors (5007288123677).

20123514531043 is a wasteful number, since it uses less digits than its factorization.

20123514531043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434849778.

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 20123514531043 in words is "twenty trillion, one hundred twenty-three billion, five hundred fourteen million, five hundred thirty-one thousand, forty-three".