16430144521 has 8 divisors (see below), whose sum is σ = 19176825600. Its totient is φ = 13783342848.

The previous prime is 16430144519. The next prime is 16430144681. The reversal of 16430144521 is 12544103461.

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 16430144521 - 2¹ = 16430144519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16430145521) 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, 24969496 + ... + 24970153.

It is an arithmetic number, because the mean of its divisors is an integer number (2397103200).

Almost surely, 2^16430144521 is an apocalyptic number.

It is an amenable number.

16430144521 is a deficient number, since it is larger than the sum of its proper divisors (2746681079).

16430144521 is an equidigital number, since it uses as much as digits as its factorization.

16430144521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49939703.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 16430144521 its reverse (12544103461), we get a palindrome (28974247982).

The spelling of 16430144521 in words is "sixteen billion, four hundred thirty million, one hundred forty-four thousand, five hundred twenty-one".