16331004421427 has 8 divisors (see below), whose sum is σ = 16384425797376. Its totient is φ = 16277661898312.

The previous prime is 16331004421421. The next prime is 16331004421429. The reversal of 16331004421427 is 72412440013361.

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 16331004421427 - 2¹⁰ = 16331004420403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16331004421421) 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, 19298303 + ... + 20126760.

It is an arithmetic number, because the mean of its divisors is an integer number (2048053224672).

Almost surely, 2^{16331004421427} is an apocalyptic number.

16331004421427 is a deficient number, since it is larger than the sum of its proper divisors (53421375949).

16331004421427 is an equidigital number, since it uses as much as digits as its factorization.

16331004421427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39426417.

The product of its (nonzero) digits is 96768, while the sum is 38.

Adding to 16331004421427 its reverse (72412440013361), we get a palindrome (88743444434788).

The spelling of 16331004421427 in words is "sixteen trillion, three hundred thirty-one billion, four million, four hundred twenty-one thousand, four hundred twenty-seven".