3554445120661 has 8 divisors (see below), whose sum is σ = 3565742442264. Its totient is φ = 3543148331520.

The previous prime is 3554445120659. The next prime is 3554445120703. The reversal of 3554445120661 is 1660215444553.

3554445120661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 202594511025 + 3351850609636 = 450105^2 + 1830806^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3554445120661 - 2¹ = 3554445120659 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 (3554445120631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16552621 + ... + 16765981.

It is an arithmetic number, because the mean of its divisors is an integer number (445717805283).

Almost surely, 2^{3554445120661} is an apocalyptic number.

It is an amenable number.

3554445120661 is a deficient number, since it is larger than the sum of its proper divisors (11297321603).

3554445120661 is a wasteful number, since it uses less digits than its factorization.

3554445120661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266231.

The product of its (nonzero) digits is 1728000, while the sum is 46.

The spelling of 3554445120661 in words is "three trillion, five hundred fifty-four billion, four hundred forty-five million, one hundred twenty thousand, six hundred sixty-one".