545771520000 has 1600 divisors, whose sum is σ = 2378159245440. Its totient is φ = 122093568000.

The previous prime is 545771519971. The next prime is 545771520011. The reversal of 545771520000 is 25177545.

545771520000 is a `hidden beast` number, since 54 + 577 + 15 + 20 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1600).

It is a super-2 number, since 2×545771520000² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 99 ways as a sum of consecutive naturals, for example, 11612159977 + ... + 11612160023.

Almost surely, 2^545771520000 is an apocalyptic number.

545771520000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545771520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1189079622720).

545771520000 is an abundant number, since it is smaller than the sum of its proper divisors (1832387725440).

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

545771520000 is an frugal number, since it uses more digits than its factorization.

545771520000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 49000, while the sum is 36.

Adding to 545771520000 its reverse (25177545), we get a palindrome (545796697545).

The spelling of 545771520000 in words is "five hundred forty-five billion, seven hundred seventy-one million, five hundred twenty thousand".