21602357632232 has 64 divisors (see below), whose sum is σ = 44082885646800. Its totient is φ = 9864687974400.

The previous prime is 21602357632223. The next prime is 21602357632237. The reversal of 21602357632232 is 23223675320612.

It can be written as a sum of positive squares in 8 ways, for example, as 1560135894916 + 20042221737316 = 1249054^2 + 4476854^2 .

It is not an unprimeable number, because it can be changed into a prime (21602357632237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14290628 + ... + 15729804.

Almost surely, 2^{21602357632232} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21602357632232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22041442823400).

21602357632232 is an abundant number, since it is smaller than the sum of its proper divisors (22480528014568).

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

21602357632232 is a wasteful number, since it uses less digits than its factorization.

21602357632232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440726 (or 1440722 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 44.

The spelling of 21602357632232 in words is "twenty-one trillion, six hundred two billion, three hundred fifty-seven million, six hundred thirty-two thousand, two hundred thirty-two".