21602160216432 has 160 divisors (see below), whose sum is σ = 62421553376000. Its totient is φ = 7152578484480.

The previous prime is 21602160216409. The next prime is 21602160216437. The reversal of 21602160216432 is 23461206120612.

21602160216432 is a `hidden beast` number, since 2 + 1 + 6 + 0 + 2 + 1 + 6 + 0 + 2 + 1 + 643 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21602160216437) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 67006119 + ... + 67327737.

It is an arithmetic number, because the mean of its divisors is an integer number (390134708600).

Almost surely, 2^{21602160216432} 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 21602160216432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31210776688000).

21602160216432 is an abundant number, since it is smaller than the sum of its proper divisors (40819393159568).

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

21602160216432 is a wasteful number, since it uses less digits than its factorization.

21602160216432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322676 (or 322664 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 21602160216432 in words is "twenty-one trillion, six hundred two billion, one hundred sixty million, two hundred sixteen thousand, four hundred thirty-two".