545458871720 has 512 divisors, whose sum is σ = 1517477068800. Its totient is φ = 172595404800.

The previous prime is 545458871651. The next prime is 545458871767. The reversal of 545458871720 is 27178854545.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2768826662 + ... + 2768826858.

It is an arithmetic number, because the mean of its divisors is an integer number (2963822400).

Almost surely, 2^545458871720 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 545458871720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (758738534400).

545458871720 is an abundant number, since it is smaller than the sum of its proper divisors (972018197080).

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

545458871720 is a wasteful number, since it uses less digits than its factorization.

545458871720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449 (or 445 counting only the distinct ones).

The product of its (nonzero) digits is 12544000, while the sum is 56.

The spelling of 545458871720 in words is "five hundred forty-five billion, four hundred fifty-eight million, eight hundred seventy-one thousand, seven hundred twenty".