3669839727778 has 12 divisors (see below), whose sum is σ = 6403495851702. Its totient is φ = 1572788454720.

The previous prime is 3669839727739. The next prime is 3669839727787. The reversal of 3669839727778 is 8777279389663.

It can be written as a sum of positive squares in only one way, i.e., 2313553555369 + 1356286172409 = 1521037^2 + 1164597^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18723671983 + ... + 18723672178.

Almost surely, 2^{3669839727778} is an apocalyptic number.

3669839727778 is a deficient number, since it is larger than the sum of its proper divisors (2733656123924).

3669839727778 is a wasteful number, since it uses less digits than its factorization.

3669839727778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37447344177 (or 37447344170 counting only the distinct ones).

The product of its digits is 8065516032, while the sum is 82.

The spelling of 3669839727778 in words is "three trillion, six hundred sixty-nine billion, eight hundred thirty-nine million, seven hundred twenty-seven thousand, seven hundred seventy-eight".