16062646521 has 4 divisors (see below), whose sum is σ = 21416862032. Its totient is φ = 10708431012.

The previous prime is 16062646507. The next prime is 16062646543. The reversal of 16062646521 is 12564626061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 16062646521 - 2¹⁴ = 16062630137 is a prime.

It is a super-2 number, since 2×16062646521² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16062646521.

It is not an unprimeable number, because it can be changed into a prime (16062646591) 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 3 ways as a sum of consecutive naturals, for example, 2677107751 + ... + 2677107756.

It is an arithmetic number, because the mean of its divisors is an integer number (5354215508).

Almost surely, 2^16062646521 is an apocalyptic number.

It is an amenable number.

16062646521 is a deficient number, since it is larger than the sum of its proper divisors (5354215511).

16062646521 is an equidigital number, since it uses as much as digits as its factorization.

16062646521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5354215510.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 16062646521 in words is "sixteen billion, sixty-two million, six hundred forty-six thousand, five hundred twenty-one".