21750315848 has 32 divisors (see below), whose sum is σ = 43194060000. Its totient is φ = 10232293632.

The previous prime is 21750315827. The next prime is 21750315887. The reversal of 21750315848 is 84851305712.

It is a junction number, because it is equal to n+sod(n) for n = 21750315799 and 21750315808.

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, 453011 + ... + 498717.

It is an arithmetic number, because the mean of its divisors is an integer number (1349814375).

Almost surely, 2^21750315848 is an apocalyptic number.

It is an amenable number.

21750315848 is a deficient number, since it is larger than the sum of its proper divisors (21443744152).

21750315848 is a wasteful number, since it uses less digits than its factorization.

21750315848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49229 (or 49225 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 44.

The spelling of 21750315848 in words is "twenty-one billion, seven hundred fifty million, three hundred fifteen thousand, eight hundred forty-eight".