545678622720 has 1632 divisors, whose sum is σ = 2473278312960. Its totient is φ = 112113745920.

The previous prime is 545678622703. The next prime is 545678622787. The reversal of 545678622720 is 27226876545.

545678622720 is a `hidden beast` number, since 5 + 4 + 5 + 6 + 7 + 8 + 622 + 7 + 2 + 0 = 666.

It is a super-2 number, since 2×545678622720² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6131220436 + ... + 6131220524.

Almost surely, 2^545678622720 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 545678622720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1236639156480).

545678622720 is an abundant number, since it is smaller than the sum of its proper divisors (1927599690240).

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

545678622720 is an frugal number, since it uses more digits than its factorization.

545678622720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 54.

The spelling of 545678622720 in words is "five hundred forty-five billion, six hundred seventy-eight million, six hundred twenty-two thousand, seven hundred twenty".