20904024144408 has 16 divisors (see below), whose sum is σ = 52260060361080. Its totient is φ = 6968008048128.

The previous prime is 20904024144401. The next prime is 20904024144431. The reversal of 20904024144408 is 80444142040902.

It is a self number, because there is not a number n which added to its sum of digits gives 20904024144408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20904024144401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435500502985 + ... + 435500503032.

Almost surely, 2^{20904024144408} is an apocalyptic number.

It is an amenable number.

20904024144408 is an abundant number, since it is smaller than the sum of its proper divisors (31356036216672).

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

20904024144408 is a wasteful number, since it uses less digits than its factorization.

20904024144408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871001006026 (or 871001006022 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 42.

The spelling of 20904024144408 in words is "twenty trillion, nine hundred four billion, twenty-four million, one hundred forty-four thousand, four hundred eight".