16506223356 has 24 divisors (see below), whose sum is σ = 44016595840. Its totient is φ = 4716063792.

The previous prime is 16506223351. The next prime is 16506223373. The reversal of 16506223356 is 65332260561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16506223351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98251246 + ... + 98251413.

Almost surely, 2^16506223356 is an apocalyptic number.

It is an amenable number.

16506223356 is an abundant number, since it is smaller than the sum of its proper divisors (27510372484).

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

16506223356 is a wasteful number, since it uses less digits than its factorization.

16506223356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196502673 (or 196502671 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 39.

The spelling of 16506223356 in words is "sixteen billion, five hundred six million, two hundred twenty-three thousand, three hundred fifty-six".