21873323950 has 48 divisors (see below), whose sum is σ = 42366440160. Its totient is φ = 8391600000.

The previous prime is 21873323933. The next prime is 21873323951. The reversal of 21873323950 is 5932337812.

It is a junction number, because it is equal to n+sod(n) for n = 21873323897 and 21873323906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21873323951) 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 23 ways as a sum of consecutive naturals, for example, 169000 + ... + 268900.

It is an arithmetic number, because the mean of its divisors is an integer number (882634170).

Almost surely, 2^21873323950 is an apocalyptic number.

21873323950 is a deficient number, since it is larger than the sum of its proper divisors (20493116210).

21873323950 is a wasteful number, since it uses less digits than its factorization.

21873323950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100093 (or 100088 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 21873323950 in words is "twenty-one billion, eight hundred seventy-three million, three hundred twenty-three thousand, nine hundred fifty".