550656165601 has 4 divisors (see below), whose sum is σ = 583047704772. Its totient is φ = 518264626432.

The previous prime is 550656165599. The next prime is 550656165613. The reversal of 550656165601 is 106561656055.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 210703032576 + 339953133025 = 459024^2 + 583055^2 .

It is not a de Polignac number, because 550656165601 - 2¹ = 550656165599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550656165641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16195769560 + ... + 16195769593.

It is an arithmetic number, because the mean of its divisors is an integer number (145761926193).

Almost surely, 2^550656165601 is an apocalyptic number.

It is an amenable number.

550656165601 is a deficient number, since it is larger than the sum of its proper divisors (32391539171).

550656165601 is a wasteful number, since it uses less digits than its factorization.

550656165601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32391539170.

The product of its (nonzero) digits is 810000, while the sum is 46.

The spelling of 550656165601 in words is "five hundred fifty billion, six hundred fifty-six million, one hundred sixty-five thousand, six hundred one".