545505121400 has 48 divisors (see below), whose sum is σ = 1309212306240. Its totient is φ = 211163270400.

The previous prime is 545505121393. The next prime is 545505121417. The reversal of 545505121400 is 4121505545.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 43986149 + ... + 43998548.

It is an arithmetic number, because the mean of its divisors is an integer number (27275256380).

Almost surely, 2^545505121400 is an apocalyptic number.

545505121400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

545505121400 is an abundant number, since it is smaller than the sum of its proper divisors (763707184840).

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

545505121400 is a wasteful number, since it uses less digits than its factorization.

545505121400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87984744 (or 87984735 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 32.

Adding to 545505121400 its reverse (4121505545), we get a palindrome (549626626945).

The spelling of 545505121400 in words is "five hundred forty-five billion, five hundred five million, one hundred twenty-one thousand, four hundred".