5564145778 has 4 divisors (see below), whose sum is σ = 8346218670. Its totient is φ = 2782072888.

The previous prime is 5564145767. The next prime is 5564145787. The reversal of 5564145778 is 8775414655.

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

It can be written as a sum of positive squares in only one way, i.e., 4374102769 + 1190043009 = 66137^2 + 34497^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1391036443 + ... + 1391036446.

Almost surely, 2^5564145778 is an apocalyptic number.

5564145778 is a deficient number, since it is larger than the sum of its proper divisors (2782072892).

5564145778 is a wasteful number, since it uses less digits than its factorization.

5564145778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2782072891.

The product of its digits is 4704000, while the sum is 52.

The square root of 5564145778 is about 74593.2019556742. The cubic root of 5564145778 is about 1772.0099925636.

The spelling of 5564145778 in words is "five billion, five hundred sixty-four million, one hundred forty-five thousand, seven hundred seventy-eight".