20345363742309 has 8 divisors (see below), whose sum is σ = 27127172695392. Its totient is φ = 13563565308720.

The previous prime is 20345363742299. The next prime is 20345363742317. The reversal of 20345363742309 is 90324736354302.

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

It is not a de Polignac number, because 20345363742309 - 2¹² = 20345363738213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20345363742359) 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, 5291374 + ... + 8287904.

It is an arithmetic number, because the mean of its divisors is an integer number (3390896586924).

Almost surely, 2^{20345363742309} is an apocalyptic number.

It is an amenable number.

20345363742309 is a deficient number, since it is larger than the sum of its proper divisors (6781808953083).

20345363742309 is a wasteful number, since it uses less digits than its factorization.

20345363742309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5259747.

The product of its (nonzero) digits is 9797760, while the sum is 51.

The spelling of 20345363742309 in words is "twenty trillion, three hundred forty-five billion, three hundred sixty-three million, seven hundred forty-two thousand, three hundred nine".