41689779618 has 16 divisors (see below), whose sum is σ = 83381566176. Its totient is φ = 13896258720.

The previous prime is 41689779617. The next prime is 41689779619. The reversal of 41689779618 is 81697798614.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (41689779617) and next prime (41689779619).

It is not an unprimeable number, because it can be changed into a prime (41689779617) 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 7 ways as a sum of consecutive naturals, for example, 416638 + ... + 506918.

It is an arithmetic number, because the mean of its divisors is an integer number (5211347886).

Almost surely, 2^41689779618 is an apocalyptic number.

41689779618 is an abundant number, since it is smaller than the sum of its proper divisors (41691786558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

41689779618 is a wasteful number, since it uses less digits than its factorization.

41689779618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167249.

The product of its digits is 36578304, while the sum is 66.

The spelling of 41689779618 in words is "forty-one billion, six hundred eighty-nine million, seven hundred seventy-nine thousand, six hundred eighteen".