5561777995 has 4 divisors (see below), whose sum is σ = 6674133600. Its totient is φ = 4449422392.

The previous prime is 5561777941. The next prime is 5561777999. The reversal of 5561777995 is 5997771655.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5561777995 - 2²¹ = 5559680843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5561777999) 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 3 ways as a sum of consecutive naturals, for example, 556177795 + ... + 556177804.

It is an arithmetic number, because the mean of its divisors is an integer number (1668533400).

Almost surely, 2^5561777995 is an apocalyptic number.

5561777995 is a deficient number, since it is larger than the sum of its proper divisors (1112355605).

5561777995 is a wasteful number, since it uses less digits than its factorization.

5561777995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112355604.

The product of its digits is 20837250, while the sum is 61.

The square root of 5561777995 is about 74577.3289612869. The cubic root of 5561777995 is about 1771.7586014487.

The spelling of 5561777995 in words is "five billion, five hundred sixty-one million, seven hundred seventy-seven thousand, nine hundred ninety-five".