20179628679 has 16 divisors (see below), whose sum is σ = 30796451840. Its totient is φ = 11513763360.

The previous prime is 20179628671. The next prime is 20179628723. The reversal of 20179628679 is 97682697102.

It is not a de Polignac number, because 20179628679 - 2³ = 20179628671 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20179628671) 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 15 ways as a sum of consecutive naturals, for example, 712999 + ... + 740760.

It is an arithmetic number, because the mean of its divisors is an integer number (1924778240).

Almost surely, 2^20179628679 is an apocalyptic number.

20179628679 is a deficient number, since it is larger than the sum of its proper divisors (10616823161).

20179628679 is a wasteful number, since it uses less digits than its factorization.

20179628679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454430.

The product of its (nonzero) digits is 4572288, while the sum is 57.

The spelling of 20179628679 in words is "twenty billion, one hundred seventy-nine million, six hundred twenty-eight thousand, six hundred seventy-nine".