21873068552 has 32 divisors (see below), whose sum is σ = 41313542400. Its totient is φ = 10856395200.

The previous prime is 21873068537. The next prime is 21873068561. The reversal of 21873068552 is 25586037812.

It is a super-2 number, since 2×21873068552² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21873068497 and 21873068506.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 639977 + ... + 673287.

It is an arithmetic number, because the mean of its divisors is an integer number (1291048200).

Almost surely, 2^21873068552 is an apocalyptic number.

It is an amenable number.

21873068552 is a deficient number, since it is larger than the sum of its proper divisors (19440473848).

21873068552 is a wasteful number, since it uses less digits than its factorization.

21873068552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33917 (or 33913 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 21873068552 in words is "twenty-one billion, eight hundred seventy-three million, sixty-eight thousand, five hundred fifty-two".