20367715679 has 4 divisors (see below), whose sum is σ = 20368129320. Its totient is φ = 20367302040.

The previous prime is 20367715631. The next prime is 20367715699. The reversal of 20367715679 is 97651776302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20367715679 - 2¹² = 20367711583 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20367715679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20367715699) 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 3 ways as a sum of consecutive naturals, for example, 121124 + ... + 235385.

It is an arithmetic number, because the mean of its divisors is an integer number (5092032330).

Almost surely, 2^20367715679 is an apocalyptic number.

20367715679 is a deficient number, since it is larger than the sum of its proper divisors (413641).

20367715679 is an equidigital number, since it uses as much as digits as its factorization.

20367715679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413640.

The product of its (nonzero) digits is 3333960, while the sum is 53.

The spelling of 20367715679 in words is "twenty billion, three hundred sixty-seven million, seven hundred fifteen thousand, six hundred seventy-nine".