8016066721550 has 24 divisors (see below), whose sum is σ = 14910296331000. Its totient is φ = 3206338037280.

The previous prime is 8016066721549. The next prime is 8016066721567. The reversal of 8016066721550 is 551276606108.

It is a junction number, because it is equal to n+sod(n) for n = 8016066721495 and 8016066721504.

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, 374600 + ... + 4021499.

It is an arithmetic number, because the mean of its divisors is an integer number (621262347125).

Almost surely, 2^{8016066721550} is an apocalyptic number.

8016066721550 is a deficient number, since it is larger than the sum of its proper divisors (6894229609450).

8016066721550 is a wasteful number, since it uses less digits than its factorization.

8016066721550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4432580 (or 4432575 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 47.

The spelling of 8016066721550 in words is "eight trillion, sixteen billion, sixty-six million, seven hundred twenty-one thousand, five hundred fifty".