16713013021 has 8 divisors (see below), whose sum is σ = 17722282680. Its totient is φ = 15706649088.

The previous prime is 16713012973. The next prime is 16713013027. The reversal of 16713013021 is 12031031761.

It can be written as a sum of positive squares in 4 ways, for example, as 15315300025 + 1397712996 = 123755^2 + 37386^2 .

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 16713013021 - 2⁹ = 16713012509 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 (16713013027) 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, 714576 + ... + 737593.

It is an arithmetic number, because the mean of its divisors is an integer number (2215285335).

Almost surely, 2^16713013021 is an apocalyptic number.

It is an amenable number.

16713013021 is a deficient number, since it is larger than the sum of its proper divisors (1009269659).

16713013021 is a wasteful number, since it uses less digits than its factorization.

16713013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452863.

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

Adding to 16713013021 its reverse (12031031761), we get a palindrome (28744044782).

The spelling of 16713013021 in words is "sixteen billion, seven hundred thirteen million, thirteen thousand, twenty-one".