21167107008 has 28 divisors (see below), whose sum is σ = 56004637800. Its totient is φ = 7055702272.

The previous prime is 21167106991. The next prime is 21167107009. The reversal of 21167107008 is 80070176112.

It is a self number, because there is not a number n which added to its sum of digits gives 21167107008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21167107009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55122483 + ... + 55122866.

Almost surely, 2^21167107008 is an apocalyptic number.

It is an amenable number.

21167107008 is an abundant number, since it is smaller than the sum of its proper divisors (34837530792).

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

21167107008 is a wasteful number, since it uses less digits than its factorization.

21167107008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110245364 (or 110245354 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 33.

The spelling of 21167107008 in words is "twenty-one billion, one hundred sixty-seven million, one hundred seven thousand, eight".