20168931299 has 8 divisors (see below), whose sum is σ = 22077567792. Its totient is φ = 18272811040.

The previous prime is 20168931241. The next prime is 20168931317. The reversal of 20168931299 is 99213986102.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-20168931299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20168931239) 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, 3125684 + ... + 3132129.

It is an arithmetic number, because the mean of its divisors is an integer number (2759695974).

Almost surely, 2^20168931299 is an apocalyptic number.

20168931299 is a deficient number, since it is larger than the sum of its proper divisors (1908636493).

20168931299 is a wasteful number, since it uses less digits than its factorization.

20168931299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6258117.

The product of its (nonzero) digits is 419904, while the sum is 50.

The spelling of 20168931299 in words is "twenty billion, one hundred sixty-eight million, nine hundred thirty-one thousand, two hundred ninety-nine".