16734050021 has 8 divisors (see below), whose sum is σ = 18026674680. Its totient is φ = 15442195392.

The previous prime is 16734050017. The next prime is 16734050023. The reversal of 16734050021 is 12005043761.

It can be written as a sum of positive squares in 4 ways, for example, as 6575425921 + 10158624100 = 81089^2 + 100790^2 .

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

It is not a de Polignac number, because 16734050021 - 2² = 16734050017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16734050023) 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, 146966 + ... + 234663.

It is an arithmetic number, because the mean of its divisors is an integer number (2253334335).

Almost surely, 2^16734050021 is an apocalyptic number.

It is an amenable number.

16734050021 is a deficient number, since it is larger than the sum of its proper divisors (1292624659).

16734050021 is a wasteful number, since it uses less digits than its factorization.

16734050021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385015.

The product of its (nonzero) digits is 5040, while the sum is 29.

Adding to 16734050021 its reverse (12005043761), we get a palindrome (28739093782).

The spelling of 16734050021 in words is "sixteen billion, seven hundred thirty-four million, fifty thousand, twenty-one".