21235050432 has 42 divisors (see below), whose sum is σ = 60866439608. Its totient is φ = 7078349952.

The previous prime is 21235050413. The next prime is 21235050457. The reversal of 21235050432 is 23405053212.

It is a happy number.

21235050432 is a `hidden beast` number, since 2 + 123 + 5 + 0 + 504 + 32 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 21235050396 and 21235050405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18432628 + ... + 18433779.

Almost surely, 2^21235050432 is an apocalyptic number.

It is an amenable number.

21235050432 is an abundant number, since it is smaller than the sum of its proper divisors (39631389176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21235050432 is a wasteful number, since it uses less digits than its factorization.

21235050432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36866425 (or 36866412 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The spelling of 21235050432 in words is "twenty-one billion, two hundred thirty-five million, fifty thousand, four hundred thirty-two".