21134032432 has 40 divisors (see below), whose sum is σ = 41220576000. Its totient is φ = 10496642112.

The previous prime is 21134032399. The next prime is 21134032441. The reversal of 21134032432 is 23423043112.

It is a junction number, because it is equal to n+sod(n) for n = 21134032397 and 21134032406.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2054919 + ... + 2065177.

It is an arithmetic number, because the mean of its divisors is an integer number (1030514400).

Almost surely, 2^21134032432 is an apocalyptic number.

It is an amenable number.

21134032432 is a deficient number, since it is larger than the sum of its proper divisors (20086543568).

21134032432 is a wasteful number, since it uses less digits than its factorization.

21134032432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11113 (or 11107 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21134032432 its reverse (23423043112), we get a palindrome (44557075544).

The spelling of 21134032432 in words is "twenty-one billion, one hundred thirty-four million, thirty-two thousand, four hundred thirty-two".