20023454145 has 16 divisors (see below), whose sum is σ = 32282091072. Its totient is φ = 10597654080.

The previous prime is 20023454137. The next prime is 20023454179. The reversal of 20023454145 is 54145432002.

It is not a de Polignac number, because 20023454145 - 2³ = 20023454137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5093062 + ... + 5096991.

It is an arithmetic number, because the mean of its divisors is an integer number (2017630692).

Almost surely, 2^20023454145 is an apocalyptic number.

It is an amenable number.

20023454145 is a deficient number, since it is larger than the sum of its proper divisors (12258636927).

20023454145 is a wasteful number, since it uses less digits than its factorization.

20023454145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10190192.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 20023454145 its reverse (54145432002), we get a palindrome (74168886147).

The spelling of 20023454145 in words is "twenty billion, twenty-three million, four hundred fifty-four thousand, one hundred forty-five".