21046245232 has 20 divisors (see below), whose sum is σ = 41050776600. Its totient is φ = 10452496448.

The previous prime is 21046245167. The next prime is 21046245257. The reversal of 21046245232 is 23254264012.

It is a junction number, because it is equal to n+sod(n) for n = 21046245194 and 21046245203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4411678 + ... + 4416445.

It is an arithmetic number, because the mean of its divisors is an integer number (2052538830).

Almost surely, 2^21046245232 is an apocalyptic number.

It is an amenable number.

21046245232 is a deficient number, since it is larger than the sum of its proper divisors (20004531368).

21046245232 is a wasteful number, since it uses less digits than its factorization.

21046245232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8828280 (or 8828274 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The spelling of 21046245232 in words is "twenty-one billion, forty-six million, two hundred forty-five thousand, two hundred thirty-two".