20617323079 has 8 divisors (see below), whose sum is σ = 20710840608. Its totient is φ = 20523909120.

The previous prime is 20617323061. The next prime is 20617323137. The reversal of 20617323079 is 97032371602.

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 20617323079 - 2¹⁷ = 20617192007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20617323179) 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, 388039 + ... + 437959.

It is an arithmetic number, because the mean of its divisors is an integer number (2588855076).

Almost surely, 2^20617323079 is an apocalyptic number.

20617323079 is a deficient number, since it is larger than the sum of its proper divisors (93517529).

20617323079 is a wasteful number, since it uses less digits than its factorization.

20617323079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51785.

The product of its (nonzero) digits is 95256, while the sum is 40.

The spelling of 20617323079 in words is "twenty billion, six hundred seventeen million, three hundred twenty-three thousand, seventy-nine".