20760353909 has 8 divisors (see below), whose sum is σ = 21672579840. Its totient is φ = 19848928176.

The previous prime is 20760353881. The next prime is 20760353983. The reversal of 20760353909 is 90935306702.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20760353909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20760353909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20760353309) 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, 146717 + ... + 251090.

It is an arithmetic number, because the mean of its divisors is an integer number (2709072480).

Almost surely, 2^20760353909 is an apocalyptic number.

It is an amenable number.

20760353909 is a deficient number, since it is larger than the sum of its proper divisors (912225931).

20760353909 is a wasteful number, since it uses less digits than its factorization.

20760353909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400099.

The product of its (nonzero) digits is 306180, while the sum is 44.

The spelling of 20760353909 in words is "twenty billion, seven hundred sixty million, three hundred fifty-three thousand, nine hundred nine".