9920693825909 has 8 divisors (see below), whose sum is σ = 10461124296480. Its totient is φ = 9382092224400.

The previous prime is 9920693825897. The next prime is 9920693825923. The reversal of 9920693825909 is 9095283960299.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-9920693825909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9920693825989) 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, 457206122 + ... + 457227819.

It is an arithmetic number, because the mean of its divisors is an integer number (1307640537060).

Almost surely, 2^{9920693825909} is an apocalyptic number.

It is an amenable number.

9920693825909 is a deficient number, since it is larger than the sum of its proper divisors (540430470571).

9920693825909 is a wasteful number, since it uses less digits than its factorization.

9920693825909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914434531.

The product of its (nonzero) digits is 170061120, while the sum is 71.

The spelling of 9920693825909 in words is "nine trillion, nine hundred twenty billion, six hundred ninety-three million, eight hundred twenty-five thousand, nine hundred nine".