21928410633 has 8 divisors (see below), whose sum is σ = 29539302688. Its totient is φ = 14468229504.

The previous prime is 21928410617. The next prime is 21928410661. The reversal of 21928410633 is 33601482912.

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

It is not a de Polignac number, because 21928410633 - 2⁴ = 21928410617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21928410591 and 21928410600.

It is not an unprimeable number, because it can be changed into a prime (21928410533) 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, 37677391 + ... + 37677972.

It is an arithmetic number, because the mean of its divisors is an integer number (3692412836).

Almost surely, 2^21928410633 is an apocalyptic number.

It is an amenable number.

21928410633 is a deficient number, since it is larger than the sum of its proper divisors (7610892055).

21928410633 is an equidigital number, since it uses as much as digits as its factorization.

21928410633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75355463.

The product of its (nonzero) digits is 62208, while the sum is 39.

The spelling of 21928410633 in words is "twenty-one billion, nine hundred twenty-eight million, four hundred ten thousand, six hundred thirty-three".