20409624179 has 8 divisors (see below), whose sum is σ = 23338038528. Its totient is φ = 17484398280.

The previous prime is 20409624127. The next prime is 20409624203. The reversal of 20409624179 is 97142690402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20409624179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20409624119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 783377 + ... + 809010.

It is an arithmetic number, because the mean of its divisors is an integer number (2917254816).

Almost surely, 2^20409624179 is an apocalyptic number.

20409624179 is a deficient number, since it is larger than the sum of its proper divisors (2928414349).

20409624179 is a wasteful number, since it uses less digits than its factorization.

20409624179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594225.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 20409624179 in words is "twenty billion, four hundred nine million, six hundred twenty-four thousand, one hundred seventy-nine".