20179500489 has 32 divisors (see below), whose sum is σ = 30068599680. Its totient is φ = 13375353600.

The previous prime is 20179500479. The next prime is 20179500503. The reversal of 20179500489 is 98400597102.

It is not a de Polignac number, because 20179500489 - 2⁸ = 20179500233 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20179500479) 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 31 ways as a sum of consecutive naturals, for example, 3722509 + ... + 3727925.

It is an arithmetic number, because the mean of its divisors is an integer number (939643740).

Almost surely, 2^20179500489 is an apocalyptic number.

It is an amenable number.

20179500489 is a deficient number, since it is larger than the sum of its proper divisors (9889099191).

20179500489 is a wasteful number, since it uses less digits than its factorization.

20179500489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6198 (or 6192 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 20179500489 in words is "twenty billion, one hundred seventy-nine million, five hundred thousand, four hundred eighty-nine".