21938882610867 has 8 divisors (see below), whose sum is σ = 29445564299520. Its totient is φ = 14529061331400.

The previous prime is 21938882610767. The next prime is 21938882610899. The reversal of 21938882610867 is 76801628883912.

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

It is not a de Polignac number, because 21938882610867 - 2³⁰ = 21937808869043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21938882610067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24215101767 + ... + 24215102672.

It is an arithmetic number, because the mean of its divisors is an integer number (3680695537440).

Almost surely, 2^{21938882610867} is an apocalyptic number.

21938882610867 is a deficient number, since it is larger than the sum of its proper divisors (7506681688653).

21938882610867 is a wasteful number, since it uses less digits than its factorization.

21938882610867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48430204593.

The product of its (nonzero) digits is 111476736, while the sum is 69.

The spelling of 21938882610867 in words is "twenty-one trillion, nine hundred thirty-eight billion, eight hundred eighty-two million, six hundred ten thousand, eight hundred sixty-seven".