20185536079 has 2 divisors, whose sum is σ = 20185536080. Its totient is φ = 20185536078.

The previous prime is 20185536071. The next prime is 20185536127. The reversal of 20185536079 is 97063558102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20185536079 - 2³ = 20185536071 is a prime.

It is a super-2 number, since 2×20185536079² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20185536071) 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 as a sum of consecutive naturals, namely, 10092768039 + 10092768040.

It is an arithmetic number, because the mean of its divisors is an integer number (10092768040).

Almost surely, 2^20185536079 is an apocalyptic number.

20185536079 is a deficient number, since it is larger than the sum of its proper divisors (1).

20185536079 is an equidigital number, since it uses as much as digits as its factorization.

20185536079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 20185536079 in words is "twenty billion, one hundred eighty-five million, five hundred thirty-six thousand, seventy-nine".