21602041014544 has 10 divisors (see below), whose sum is σ = 41853954465710. Its totient is φ = 10801020507264.

The previous prime is 21602041014461. The next prime is 21602041014553. The reversal of 21602041014544 is 44541014020612.

It can be written as a sum of positive squares in only one way, i.e., 21034037618944 + 568003395600 = 4586288^2 + 753660^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 675063781689 + ... + 675063781720.

It is an arithmetic number, because the mean of its divisors is an integer number (4185395446571).

Almost surely, 2^{21602041014544} is an apocalyptic number.

It is an amenable number.

21602041014544 is a deficient number, since it is larger than the sum of its proper divisors (20251913451166).

21602041014544 is a wasteful number, since it uses less digits than its factorization.

21602041014544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350127563417 (or 1350127563411 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The spelling of 21602041014544 in words is "twenty-one trillion, six hundred two billion, forty-one million, fourteen thousand, five hundred forty-four".