16726065563 has 4 divisors (see below), whose sum is σ = 16737270048. Its totient is φ = 16714861080.

The previous prime is 16726065557. The next prime is 16726065623. The reversal of 16726065563 is 36556062761.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16726065563 - 2²⁴ = 16709288347 is a prime.

It is a super-2 number, since 2×16726065563² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16726065533) 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, 5600003 + ... + 5602988.

It is an arithmetic number, because the mean of its divisors is an integer number (4184317512).

Almost surely, 2^16726065563 is an apocalyptic number.

16726065563 is a deficient number, since it is larger than the sum of its proper divisors (11204485).

16726065563 is a wasteful number, since it uses less digits than its factorization.

16726065563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11204484.

The product of its (nonzero) digits is 1360800, while the sum is 47.

The spelling of 16726065563 in words is "sixteen billion, seven hundred twenty-six million, sixty-five thousand, five hundred sixty-three".