21754575028 has 24 divisors (see below), whose sum is σ = 40314456000. Its totient is φ = 10236302208.

The previous prime is 21754575023. The next prime is 21754575043. The reversal of 21754575028 is 82057545712.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21754575023) 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, 1186273 + ... + 1204471.

It is an arithmetic number, because the mean of its divisors is an integer number (1679769000).

Almost surely, 2^21754575028 is an apocalyptic number.

It is an amenable number.

21754575028 is a deficient number, since it is larger than the sum of its proper divisors (18559880972).

21754575028 is a wasteful number, since it uses less digits than its factorization.

21754575028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35799 (or 35797 counting only the distinct ones).

The product of its (nonzero) digits is 784000, while the sum is 46.

The spelling of 21754575028 in words is "twenty-one billion, seven hundred fifty-four million, five hundred seventy-five thousand, twenty-eight".