16731130021 has 8 divisors (see below), whose sum is σ = 17167930560. Its totient is φ = 16296497952.

The previous prime is 16731130019. The next prime is 16731130043. The reversal of 16731130021 is 12003113761.

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 16731130021 - 2¹ = 16731130019 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 (16731130061) 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, 526480 + ... + 557353.

It is an arithmetic number, because the mean of its divisors is an integer number (2145991320).

Almost surely, 2^16731130021 is an apocalyptic number.

It is an amenable number.

16731130021 is a deficient number, since it is larger than the sum of its proper divisors (436800539).

16731130021 is a wasteful number, since it uses less digits than its factorization.

16731130021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084235.

The product of its (nonzero) digits is 756, while the sum is 25.

Adding to 16731130021 its reverse (12003113761), we get a palindrome (28734243782).

The spelling of 16731130021 in words is "sixteen billion, seven hundred thirty-one million, one hundred thirty thousand, twenty-one".