20054543345 has 16 divisors (see below), whose sum is σ = 24853988160. Its totient is φ = 15522790464.

The previous prime is 20054543321. The next prime is 20054543351. The reversal of 20054543345 is 54334545002.

It is a cyclic number.

It is not a de Polignac number, because 20054543345 - 2²⁸ = 19786107889 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 269687 + ... + 335916.

It is an arithmetic number, because the mean of its divisors is an integer number (1553374260).

Almost surely, 2^20054543345 is an apocalyptic number.

It is an amenable number.

20054543345 is a deficient number, since it is larger than the sum of its proper divisors (4799444815).

20054543345 is a wasteful number, since it uses less digits than its factorization.

20054543345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605824.

The product of its (nonzero) digits is 144000, while the sum is 35.

The spelling of 20054543345 in words is "twenty billion, fifty-four million, five hundred forty-three thousand, three hundred forty-five".