20423014443139 has 16 divisors (see below), whose sum is σ = 25531839599616. Its totient is φ = 15870674707200.

The previous prime is 20423014443101. The next prime is 20423014443149. The reversal of 20423014443139 is 93134441032402.

It is a cyclic number.

It is not a de Polignac number, because 20423014443139 - 2³³ = 20414424508547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20423014443149) 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, 361325902 + ... + 361382419.

It is an arithmetic number, because the mean of its divisors is an integer number (1595739974976).

Almost surely, 2^{20423014443139} is an apocalyptic number.

20423014443139 is a deficient number, since it is larger than the sum of its proper divisors (5108825156477).

20423014443139 is a wasteful number, since it uses less digits than its factorization.

20423014443139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722708706.

The product of its (nonzero) digits is 248832, while the sum is 40.

The spelling of 20423014443139 in words is "twenty trillion, four hundred twenty-three billion, fourteen million, four hundred forty-three thousand, one hundred thirty-nine".