20040280903544 has 16 divisors (see below), whose sum is σ = 40991483666520. Its totient is φ = 9109218592480.

The previous prime is 20040280903541. The next prime is 20040280903553. The reversal of 20040280903544 is 44530908204002.

It is a super-2 number, since 2×20040280903544² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20040280903541) 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, 113865232319 + ... + 113865232494.

Almost surely, 2^{20040280903544} is an apocalyptic number.

It is an amenable number.

20040280903544 is an abundant number, since it is smaller than the sum of its proper divisors (20951202762976).

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

20040280903544 is a wasteful number, since it uses less digits than its factorization.

20040280903544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227730464830 (or 227730464826 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 20040280903544 in words is "twenty trillion, forty billion, two hundred eighty million, nine hundred three thousand, five hundred forty-four".