5521056670661 has 4 divisors (see below), whose sum is σ = 6309779052192. Its totient is φ = 4732334289132.

The previous prime is 5521056670651. The next prime is 5521056670673. The reversal of 5521056670661 is 1660766501255.

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 a de Polignac number, because none of the positive numbers 2^k-5521056670661 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5521056670601) 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, 394361190755 + ... + 394361190768.

It is an arithmetic number, because the mean of its divisors is an integer number (1577444763048).

Almost surely, 2^{5521056670661} is an apocalyptic number.

It is an amenable number.

5521056670661 is a deficient number, since it is larger than the sum of its proper divisors (788722381531).

5521056670661 is an equidigital number, since it uses as much as digits as its factorization.

5521056670661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788722381530.

The product of its (nonzero) digits is 2268000, while the sum is 50.

The spelling of 5521056670661 in words is "five trillion, five hundred twenty-one billion, fifty-six million, six hundred seventy thousand, six hundred sixty-one".