41638826786 has 4 divisors (see below), whose sum is σ = 62458240182. Its totient is φ = 20819413392.

The previous prime is 41638826783. The next prime is 41638826797. The reversal of 41638826786 is 68762883614.

It is a happy number.

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., 40979929225 + 658897561 = 202435^2 + 25669^2 .

It is a super-2 number, since 2×41638826786² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (41638826783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10409706695 + ... + 10409706698.

Almost surely, 2^41638826786 is an apocalyptic number.

41638826786 is a deficient number, since it is larger than the sum of its proper divisors (20819413396).

41638826786 is a wasteful number, since it uses less digits than its factorization.

41638826786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20819413395.

The product of its digits is 18579456, while the sum is 59.

The spelling of 41638826786 in words is "forty-one billion, six hundred thirty-eight million, eight hundred twenty-six thousand, seven hundred eighty-six".