550551306400 has 72 divisors (see below), whose sum is σ = 1344165897564. Its totient is φ = 220198809600.

The previous prime is 550551306373. The next prime is 550551306407. The reversal of 550551306400 is 4603155055.

It can be written as a sum of positive squares in 6 ways, for example, as 132702832656 + 417848473744 = 364284^2 + 646412^2 .

It is not an unprimeable number, because it can be changed into a prime (550551306407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9902680 + ... + 9958120.

Almost surely, 2^550551306400 is an apocalyptic number.

550551306400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

550551306400 is an abundant number, since it is smaller than the sum of its proper divisors (793614591164).

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

550551306400 is a wasteful number, since it uses less digits than its factorization.

550551306400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67874 (or 67861 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 34.

The spelling of 550551306400 in words is "five hundred fifty billion, five hundred fifty-one million, three hundred six thousand, four hundred".