550521161720 has 64 divisors (see below), whose sum is σ = 1246924800000. Its totient is φ = 218742830208.

The previous prime is 550521161713. The next prime is 550521161783. The reversal of 550521161720 is 27161125055.

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 15 ways as a sum of consecutive naturals, for example, 13012361 + ... + 13054599.

It is an arithmetic number, because the mean of its divisors is an integer number (19483200000).

Almost surely, 2^550521161720 is an apocalyptic number.

It is an amenable number.

550521161720 is an abundant number, since it is smaller than the sum of its proper divisors (696403638280).

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

550521161720 is a wasteful number, since it uses less digits than its factorization.

550521161720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44412 (or 44408 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 35.

Adding to 550521161720 its reverse (27161125055), we get a palindrome (577682286775).

The spelling of 550521161720 in words is "five hundred fifty billion, five hundred twenty-one million, one hundred sixty-one thousand, seven hundred twenty".