20956832413 has 8 divisors (see below), whose sum is σ = 23007618720. Its totient is φ = 18930316080.

The previous prime is 20956832411. The next prime is 20956832417. The reversal of 20956832413 is 31423865902.

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

It is a cyclic number.

It is not a de Polignac number, because 20956832413 - 2¹ = 20956832411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20956832413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20956832411) 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, 6065683 + ... + 6069136.

It is an arithmetic number, because the mean of its divisors is an integer number (2875952340).

Almost surely, 2^20956832413 is an apocalyptic number.

It is an amenable number.

20956832413 is a deficient number, since it is larger than the sum of its proper divisors (2050786307).

20956832413 is a wasteful number, since it uses less digits than its factorization.

20956832413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12134987.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 20956832413 in words is "twenty billion, nine hundred fifty-six million, eight hundred thirty-two thousand, four hundred thirteen".