545215111020 has 48 divisors (see below), whose sum is σ = 1696224791520. Its totient is φ = 145390696128.

The previous prime is 545215111003. The next prime is 545215111043. The reversal of 545215111020 is 20111512545.

It is a happy number.

545215111020 is a `hidden beast` number, since 5 + 4 + 521 + 5 + 1 + 110 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 504828267 + ... + 504829346.

It is an arithmetic number, because the mean of its divisors is an integer number (35338016490).

Almost surely, 2^545215111020 is an apocalyptic number.

It is an amenable number.

545215111020 is an abundant number, since it is smaller than the sum of its proper divisors (1151009680500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

545215111020 is a wasteful number, since it uses less digits than its factorization.

545215111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009657631 (or 1009657623 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

Adding to 545215111020 its reverse (20111512545), we get a palindrome (565326623565).

The spelling of 545215111020 in words is "five hundred forty-five billion, two hundred fifteen million, one hundred eleven thousand, twenty".