21331426010632 has 64 divisors (see below), whose sum is σ = 41999636851200. Its totient is φ = 10144117969920.

The previous prime is 21331426010591. The next prime is 21331426010647. The reversal of 21331426010632 is 23601062413312.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5712294 + ... + 8677162.

It is an arithmetic number, because the mean of its divisors is an integer number (656244325800).

Almost surely, 2^{21331426010632} is an apocalyptic number.

It is an amenable number.

21331426010632 is a deficient number, since it is larger than the sum of its proper divisors (20668210840568).

21331426010632 is a wasteful number, since it uses less digits than its factorization.

21331426010632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2965406 (or 2965402 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

Adding to 21331426010632 its reverse (23601062413312), we get a palindrome (44932488423944).

The spelling of 21331426010632 in words is "twenty-one trillion, three hundred thirty-one billion, four hundred twenty-six million, ten thousand, six hundred thirty-two".