20968316929 has 8 divisors (see below), whose sum is σ = 24085435968. Its totient is φ = 17881609200.

The previous prime is 20968316927. The next prime is 20968316933. The reversal of 20968316929 is 92961386902.

It is a happy number.

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

It is not a de Polignac number, because 20968316929 - 2¹ = 20968316927 is a prime.

It is a super-4 number, since 4×20968316929⁴ (a number of 42 digits) contains 4444 as substring.

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 20968316929.

It is not an unprimeable number, because it can be changed into a prime (20968316923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7601347 + ... + 7604104.

It is an arithmetic number, because the mean of its divisors is an integer number (3010679496).

Almost surely, 2^20968316929 is an apocalyptic number.

It is an amenable number.

20968316929 is a deficient number, since it is larger than the sum of its proper divisors (3117119039).

20968316929 is a wasteful number, since it uses less digits than its factorization.

20968316929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15205655.

The product of its (nonzero) digits is 2519424, while the sum is 55.

The spelling of 20968316929 in words is "twenty billion, nine hundred sixty-eight million, three hundred sixteen thousand, nine hundred twenty-nine".