550162261661 has 4 divisors (see below), whose sum is σ = 567909431424. Its totient is φ = 532415091900.

The previous prime is 550162261657. The next prime is 550162261667. The reversal of 550162261661 is 166162261055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 550162261661 - 2² = 550162261657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550162261667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8873584835 + ... + 8873584896.

It is an arithmetic number, because the mean of its divisors is an integer number (141977357856).

Almost surely, 2^550162261661 is an apocalyptic number.

It is an amenable number.

550162261661 is a deficient number, since it is larger than the sum of its proper divisors (17747169763).

550162261661 is a wasteful number, since it uses less digits than its factorization.

550162261661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17747169762.

The product of its (nonzero) digits is 129600, while the sum is 41.

The spelling of 550162261661 in words is "five hundred fifty billion, one hundred sixty-two million, two hundred sixty-one thousand, six hundred sixty-one".