5210721162066 has 64 divisors (see below), whose sum is σ = 12620100741120. Its totient is φ = 1401080198400.

The previous prime is 5210721162037. The next prime is 5210721162089. The reversal of 5210721162066 is 6602611270125.

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 31 ways as a sum of consecutive naturals, for example, 21501111 + ... + 21742106.

It is an arithmetic number, because the mean of its divisors is an integer number (197189074080).

Almost surely, 2^{5210721162066} is an apocalyptic number.

5210721162066 is an abundant number, since it is smaller than the sum of its proper divisors (7409379579054).

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

5210721162066 is a wasteful number, since it uses less digits than its factorization.

5210721162066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43243399.

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 5210721162066 in words is "five trillion, two hundred ten billion, seven hundred twenty-one million, one hundred sixty-two thousand, sixty-six".