5561677889 has 4 divisors (see below), whose sum is σ = 5562485424. Its totient is φ = 5560870356.

The previous prime is 5561677883. The next prime is 5561677897. The reversal of 5561677889 is 9887761655.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9887761655 = 5 ⋅1977552331.

It is a cyclic number.

It is not a de Polignac number, because 5561677889 - 2⁴ = 5561677873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5561677883) 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, 393347 + ... + 407240.

It is an arithmetic number, because the mean of its divisors is an integer number (1390621356).

Almost surely, 2^5561677889 is an apocalyptic number.

It is an amenable number.

5561677889 is a deficient number, since it is larger than the sum of its proper divisors (807535).

5561677889 is an equidigital number, since it uses as much as digits as its factorization.

5561677889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807534.

The product of its digits is 25401600, while the sum is 62.

The square root of 5561677889 is about 74576.6578025591. The cubic root of 5561677889 is about 1771.7479714708.

The spelling of 5561677889 in words is "five billion, five hundred sixty-one million, six hundred seventy-seven thousand, eight hundred eighty-nine".