21846347179 has 8 divisors (see below), whose sum is σ = 22373992080. Its totient is φ = 21324170400.

The previous prime is 21846347177. The next prime is 21846347197. The reversal of 21846347179 is 97174364812.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21846347179 - 2¹ = 21846347177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21846347177) 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 in 7 ways as a sum of consecutive naturals, for example, 1358944 + ... + 1374925.

It is an arithmetic number, because the mean of its divisors is an integer number (2796749010).

Almost surely, 2^21846347179 is an apocalyptic number.

21846347179 is a deficient number, since it is larger than the sum of its proper divisors (527644901).

21846347179 is a wasteful number, since it uses less digits than its factorization.

21846347179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734061.

The product of its digits is 2032128, while the sum is 52.

The spelling of 21846347179 in words is "twenty-one billion, eight hundred forty-six million, three hundred forty-seven thousand, one hundred seventy-nine".