1009281920020 has 24 divisors (see below), whose sum is σ = 2312173126368. Its totient is φ = 367011607200.

The previous prime is 1009281919999. The next prime is 1009281920029. The reversal of 1009281920020 is 200291829001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009281920029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2293822326 + ... + 2293822765.

It is an arithmetic number, because the mean of its divisors is an integer number (96340546932).

Almost surely, 2^{1009281920020} is an apocalyptic number.

1009281920020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1009281920020 is an abundant number, since it is smaller than the sum of its proper divisors (1302891206348).

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

1009281920020 is a wasteful number, since it uses less digits than its factorization.

1009281920020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4587645111 (or 4587645109 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The spelling of 1009281920020 in words is "one trillion, nine billion, two hundred eighty-one million, nine hundred twenty thousand, twenty".