104161326021 has 6 divisors (see below), whose sum is σ = 150455248710. Its totient is φ = 69440884008.

The previous prime is 104161326011. The next prime is 104161326023. The reversal of 104161326021 is 120623161401.

It is a happy number.

104161326021 is a `hidden beast` number, since 1 + 0 + 4 + 1 + 613 + 26 + 0 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 60641525025 + 43519800996 = 246255^2 + 208614^2 .

It is not a de Polignac number, because 104161326021 - 2¹⁰ = 104161324997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104161326023) 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 5 ways as a sum of consecutive naturals, for example, 5786740326 + ... + 5786740343.

It is an arithmetic number, because the mean of its divisors is an integer number (25075874785).

Almost surely, 2^104161326021 is an apocalyptic number.

It is an amenable number.

104161326021 is a deficient number, since it is larger than the sum of its proper divisors (46293922689).

104161326021 is a wasteful number, since it uses less digits than its factorization.

104161326021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11573480675 (or 11573480672 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 104161326021 its reverse (120623161401), we get a palindrome (224784487422).

The spelling of 104161326021 in words is "one hundred four billion, one hundred sixty-one million, three hundred twenty-six thousand, twenty-one".