20073836885 has 4 divisors (see below), whose sum is σ = 24088604268. Its totient is φ = 16059069504.

The previous prime is 20073836837. The next prime is 20073836903. The reversal of 20073836885 is 58863837002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15896670724 + 4177166161 = 126082^2 + 64631^2 .

It is a cyclic number.

It is not a de Polignac number, because 20073836885 - 2⁶ = 20073836821 is a prime.

It is a super-3 number, since 3×20073836885³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 2007383684 + ... + 2007383693.

It is an arithmetic number, because the mean of its divisors is an integer number (6022151067).

Almost surely, 2^20073836885 is an apocalyptic number.

It is an amenable number.

20073836885 is a deficient number, since it is larger than the sum of its proper divisors (4014767383).

20073836885 is an equidigital number, since it uses as much as digits as its factorization.

20073836885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4014767382.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 20073836885 in words is "twenty billion, seventy-three million, eight hundred thirty-six thousand, eight hundred eighty-five".