1020720133892 has 12 divisors (see below), whose sum is σ = 1843881532416. Its totient is φ = 493896838920.

The previous prime is 1020720133837. The next prime is 1020720133921. The reversal of 1020720133892 is 2983310270201.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4115806868 + ... + 4115807115.

It is an arithmetic number, because the mean of its divisors is an integer number (153656794368).

Almost surely, 2^{1020720133892} is an apocalyptic number.

It is an amenable number.

1020720133892 is a deficient number, since it is larger than the sum of its proper divisors (823161398524).

1020720133892 is a wasteful number, since it uses less digits than its factorization.

1020720133892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8231614018 (or 8231614016 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 1020720133892 in words is "one trillion, twenty billion, seven hundred twenty million, one hundred thirty-three thousand, eight hundred ninety-two".