20753099309 has 8 divisors (see below), whose sum is σ = 20813351328. Its totient is φ = 20692914160.

The previous prime is 20753099291. The next prime is 20753099357. The reversal of 20753099309 is 90399035702.

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-20753099309 is a prime.

It is a super-2 number, since 2×20753099309² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20753099209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 642074 + ... + 673620.

It is an arithmetic number, because the mean of its divisors is an integer number (2601668916).

Almost surely, 2^20753099309 is an apocalyptic number.

It is an amenable number.

20753099309 is a deficient number, since it is larger than the sum of its proper divisors (60252019).

20753099309 is a wasteful number, since it uses less digits than its factorization.

20753099309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33435.

The product of its (nonzero) digits is 459270, while the sum is 47.

The spelling of 20753099309 in words is "twenty billion, seven hundred fifty-three million, ninety-nine thousand, three hundred nine".