41778908609 has 4 divisors (see below), whose sum is σ = 43219560660. Its totient is φ = 40338256560.

The previous prime is 41778908593. The next prime is 41778908629. The reversal of 41778908609 is 90680987714.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18470169025 + 23308739584 = 135905^2 + 152672^2 .

It is a cyclic number.

It is not a de Polignac number, because 41778908609 - 2⁴ = 41778908593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41778908629) 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, 720325982 + ... + 720326039.

It is an arithmetic number, because the mean of its divisors is an integer number (10804890165).

Almost surely, 2^41778908609 is an apocalyptic number.

It is an amenable number.

41778908609 is a deficient number, since it is larger than the sum of its proper divisors (1440652051).

41778908609 is a wasteful number, since it uses less digits than its factorization.

41778908609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440652050.

The product of its (nonzero) digits is 6096384, while the sum is 59.

The spelling of 41778908609 in words is "forty-one billion, seven hundred seventy-eight million, nine hundred eight thousand, six hundred nine".