20445103671042 has 16 divisors (see below), whose sum is σ = 40890252816000. Its totient is φ = 6815026978032.

The previous prime is 20445103671017. The next prime is 20445103671071. The reversal of 20445103671042 is 24017630154402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7643959 + ... + 9965957.

It is an arithmetic number, because the mean of its divisors is an integer number (2555640801000).

Almost surely, 2^{20445103671042} is an apocalyptic number.

20445103671042 is an abundant number, since it is smaller than the sum of its proper divisors (20445149144958).

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

20445103671042 is a wasteful number, since it uses less digits than its factorization.

20445103671042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3789497.

The product of its (nonzero) digits is 161280, while the sum is 39.

The spelling of 20445103671042 in words is "twenty trillion, four hundred forty-five billion, one hundred three million, six hundred seventy-one thousand, forty-two".