5561403438877 has 8 divisors (see below), whose sum is σ = 6533676767520. Its totient is φ = 4666911976560.

The previous prime is 5561403438859. The next prime is 5561403438881. The reversal of 5561403438877 is 7788343041655.

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 5561403438877 - 2¹⁵ = 5561403406109 is a prime.

It is a super-2 number, since 2×5561403438877² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5561403438377) 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, 19445466427 + ... + 19445466712.

It is an arithmetic number, because the mean of its divisors is an integer number (816709595940).

Almost surely, 2^{5561403438877} is an apocalyptic number.

It is an amenable number.

5561403438877 is a deficient number, since it is larger than the sum of its proper divisors (972273328643).

5561403438877 is a wasteful number, since it uses less digits than its factorization.

5561403438877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38890933163.

The product of its (nonzero) digits is 67737600, while the sum is 61.

The spelling of 5561403438877 in words is "five trillion, five hundred sixty-one billion, four hundred three million, four hundred thirty-eight thousand, eight hundred seventy-seven".