21210677632 has 32 divisors (see below), whose sum is σ = 42340455000. Its totient is φ = 10584053760.

The previous prime is 21210677603. The next prime is 21210677659. The reversal of 21210677632 is 23677601212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 21210677591 and 21210677600.

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, 102169 + ... + 229912.

Almost surely, 2^21210677632 is an apocalyptic number.

It is an amenable number.

21210677632 is a deficient number, since it is larger than the sum of its proper divisors (21129777368).

21210677632 is an equidigital number, since it uses as much as digits as its factorization.

21210677632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332594 (or 332582 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The spelling of 21210677632 in words is "twenty-one billion, two hundred ten million, six hundred seventy-seven thousand, six hundred thirty-two".