20385537000242 has 8 divisors (see below), whose sum is σ = 31404746189676. Its totient is φ = 9917288270352.

The previous prime is 20385537000193. The next prime is 20385537000329. The reversal of 20385537000242 is 24200073558302.

It can be written as a sum of positive squares in 2 ways, for example, as 13644446557921 + 6741090442321 = 3693839^2 + 2596361^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20385537000242.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137740114793 + ... + 137740114940.

Almost surely, 2^{20385537000242} is an apocalyptic number.

20385537000242 is a deficient number, since it is larger than the sum of its proper divisors (11019209189434).

20385537000242 is a wasteful number, since it uses less digits than its factorization.

20385537000242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275480229772.

The product of its (nonzero) digits is 403200, while the sum is 41.

The spelling of 20385537000242 in words is "twenty trillion, three hundred eighty-five billion, five hundred thirty-seven million, two hundred forty-two", and thus it is an aban number.