21604734442150 has 24 divisors (see below), whose sum is σ = 40196059490664. Its totient is φ = 8639473684800.

The previous prime is 21604734442117. The next prime is 21604734442201. The reversal of 21604734442150 is 5124443740612.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21604734442097 and 21604734442106.

It is a congruent number.

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 in 11 ways as a sum of consecutive naturals, for example, 60321967 + ... + 60679066.

It is an arithmetic number, because the mean of its divisors is an integer number (1674835812111).

Almost surely, 2^{21604734442150} is an apocalyptic number.

21604734442150 is a deficient number, since it is larger than the sum of its proper divisors (18591325048514).

21604734442150 is a wasteful number, since it uses less digits than its factorization.

21604734442150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121004616 (or 121004611 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 43.

The spelling of 21604734442150 in words is "twenty-one trillion, six hundred four billion, seven hundred thirty-four million, four hundred forty-two thousand, one hundred fifty".