20605442122488 has 32 divisors (see below), whose sum is σ = 51513727502160. Its totient is φ = 6868464414720.

The previous prime is 20605442122477. The next prime is 20605442122519. The reversal of 20605442122488 is 88422124450602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13582648 + ... + 15023288.

Almost surely, 2^{20605442122488} is an apocalyptic number.

It is an amenable number.

20605442122488 is an abundant number, since it is smaller than the sum of its proper divisors (30908285379672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20605442122488 is a wasteful number, since it uses less digits than its factorization.

20605442122488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2036607 (or 2036603 counting only the distinct ones).

The product of its (nonzero) digits is 1966080, while the sum is 48.

The spelling of 20605442122488 in words is "twenty trillion, six hundred five billion, four hundred forty-two million, one hundred twenty-two thousand, four hundred eighty-eight".