545422321664 has 96 divisors (see below), whose sum is σ = 1193538265920. Its totient is φ = 247123968000.

The previous prime is 545422321621. The next prime is 545422321687. The reversal of 545422321664 is 466123224545.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7012589 + ... + 7089939.

It is an arithmetic number, because the mean of its divisors is an integer number (12432690270).

Almost surely, 2^545422321664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545422321664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (596769132960).

545422321664 is an abundant number, since it is smaller than the sum of its proper divisors (648115944256).

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

545422321664 is a wasteful number, since it uses less digits than its factorization.

545422321664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77697 (or 77677 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 44.

The spelling of 545422321664 in words is "five hundred forty-five billion, four hundred twenty-two million, three hundred twenty-one thousand, six hundred sixty-four".