20010312168 has 128 divisors (see below), whose sum is σ = 62439275520. Its totient is φ = 5191695360.

The previous prime is 20010312149. The next prime is 20010312169. The reversal of 20010312168 is 86121301002.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (20010312169) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1799955 + ... + 1811037.

It is an arithmetic number, because the mean of its divisors is an integer number (487806840).

Almost surely, 2^20010312168 is an apocalyptic number.

20010312168 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20010312168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31219637760).

20010312168 is an abundant number, since it is smaller than the sum of its proper divisors (42428963352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20010312168 is a wasteful number, since it uses less digits than its factorization.

20010312168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12087 (or 12083 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The spelling of 20010312168 in words is "twenty billion, ten million, three hundred twelve thousand, one hundred sixty-eight".