21876067812 has 24 divisors (see below), whose sum is σ = 52423731136. Its totient is φ = 7094940768.

The previous prime is 21876067769. The next prime is 21876067847.

21876067812 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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, 24634768 + ... + 24635655.

Almost surely, 2^21876067812 is an apocalyptic number.

It is an amenable number.

21876067812 is an abundant number, since it is smaller than the sum of its proper divisors (30547663324).

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

21876067812 is a wasteful number, since it uses less digits than its factorization.

21876067812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49270467 (or 49270465 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 48.

The spelling of 21876067812 in words is "twenty-one billion, eight hundred seventy-six million, sixty-seven thousand, eight hundred twelve".