545321338056 has 192 divisors, whose sum is σ = 1706777542080. Its totient is φ = 155453091840.

The previous prime is 545321338043. The next prime is 545321338057. The reversal of 545321338056 is 650833123545.

545321338056 is a `hidden beast` number, since 5 + 4 + 5 + 3 + 213 + 380 + 56 = 666.

It is not an unprimeable number, because it can be changed into a prime (545321338057) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31591380 + ... + 31608636.

It is an arithmetic number, because the mean of its divisors is an integer number (8889466365).

Almost surely, 2^545321338056 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 545321338056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (853388771040).

545321338056 is an abundant number, since it is smaller than the sum of its proper divisors (1161456204024).

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

545321338056 is a wasteful number, since it uses less digits than its factorization.

545321338056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19644 (or 19637 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

The spelling of 545321338056 in words is "five hundred forty-five billion, three hundred twenty-one million, three hundred thirty-eight thousand, fifty-six".