5544577661 has 8 divisors (see below), whose sum is σ = 6337975680. Its totient is φ = 4751508528.

The previous prime is 5544577651. The next prime is 5544577679. The reversal of 5544577661 is 1667754455.

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 5544577661 - 2²² = 5540383357 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 (5544577651) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 44966 + ... + 114503.

It is an arithmetic number, because the mean of its divisors is an integer number (792246960).

Almost surely, 2^5544577661 is an apocalyptic number.

It is an amenable number.

5544577661 is a deficient number, since it is larger than the sum of its proper divisors (793398019).

5544577661 is a wasteful number, since it uses less digits than its factorization.

5544577661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164443.

The product of its digits is 3528000, while the sum is 50.

The square root of 5544577661 is about 74461.9208790641. The cubic root of 5544577661 is about 1769.9302706951.

The spelling of 5544577661 in words is "five billion, five hundred forty-four million, five hundred seventy-seven thousand, six hundred sixty-one".