1001909200020 has 48 divisors (see below), whose sum is σ = 2806466974080. Its totient is φ = 267069004416.

The previous prime is 1001909200001. The next prime is 1001909200027. The reversal of 1001909200020 is 200029091001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001909200027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3185515 + ... + 3485874.

It is an arithmetic number, because the mean of its divisors is an integer number (58468061960).

Almost surely, 2^{1001909200020} is an apocalyptic number.

1001909200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001909200020 is an abundant number, since it is smaller than the sum of its proper divisors (1804557774060).

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

1001909200020 is a wasteful number, since it uses less digits than its factorization.

1001909200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6673904 (or 6673902 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 24.

The spelling of 1001909200020 in words is "one trillion, one billion, nine hundred nine million, two hundred thousand, twenty".