16224352509 has 16 divisors (see below), whose sum is σ = 22910152320. Its totient is φ = 10177681920.

The previous prime is 16224352471. The next prime is 16224352511. The reversal of 16224352509 is 90525342261.

It is not a de Polignac number, because 16224352509 - 2⁸ = 16224352253 is a prime.

It is a super-2 number, since 2×16224352509² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16224352549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207544 + ... + 274814.

It is an arithmetic number, because the mean of its divisors is an integer number (1431884520).

Almost surely, 2^16224352509 is an apocalyptic number.

It is an amenable number.

16224352509 is a deficient number, since it is larger than the sum of its proper divisors (6685799811).

16224352509 is a wasteful number, since it uses less digits than its factorization.

16224352509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72020.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 16224352509 in words is "sixteen billion, two hundred twenty-four million, three hundred fifty-two thousand, five hundred nine".