202020445545 has 8 divisors (see below), whose sum is σ = 323232712896. Its totient is φ = 107744237616.

The previous prime is 202020445541. The next prime is 202020445573. The reversal of 202020445545 is 545544020202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 202020445545 - 2² = 202020445541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (202020445541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6734014837 + ... + 6734014866.

It is an arithmetic number, because the mean of its divisors is an integer number (40404089112).

Almost surely, 2^202020445545 is an apocalyptic number.

It is an amenable number.

202020445545 is a deficient number, since it is larger than the sum of its proper divisors (121212267351).

202020445545 is a wasteful number, since it uses less digits than its factorization.

202020445545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13468029711.

The product of its (nonzero) digits is 64000, while the sum is 33.

Adding to 202020445545 its reverse (545544020202), we get a palindrome (747564465747).

The spelling of 202020445545 in words is "two hundred two billion, twenty million, four hundred forty-five thousand, five hundred forty-five".