16426656521 has 8 divisors (see below), whose sum is σ = 18974106144. Its totient is φ = 14054893120.

The previous prime is 16426656517. The next prime is 16426656529. The reversal of 16426656521 is 12565662461.

16426656521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16426656521 - 2² = 16426656517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16426656529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43921355 + ... + 43921728.

It is an arithmetic number, because the mean of its divisors is an integer number (2371763268).

Almost surely, 2^16426656521 is an apocalyptic number.

16426656521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16426656521 is a deficient number, since it is larger than the sum of its proper divisors (2547449623).

16426656521 is a wasteful number, since it uses less digits than its factorization.

16426656521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87843111.

The product of its digits is 518400, while the sum is 44.

The spelling of 16426656521 in words is "sixteen billion, four hundred twenty-six million, six hundred fifty-six thousand, five hundred twenty-one".