16017286993 has 8 divisors (see below), whose sum is σ = 16090893000. Its totient is φ = 15943723008.

The previous prime is 16017286991. The next prime is 16017287003. The reversal of 16017286993 is 39968271061.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2457383184 + 13559903809 = 49572^2 + 116447^2 .

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 16017286993 - 2¹ = 16017286991 is a prime.

It is a super-2 number, since 2×16017286993² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16017286993.

It is not an unprimeable number, because it can be changed into a prime (16017286991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 953733 + ... + 970381.

It is an arithmetic number, because the mean of its divisors is an integer number (2011361625).

Almost surely, 2^16017286993 is an apocalyptic number.

It is an amenable number.

16017286993 is a deficient number, since it is larger than the sum of its proper divisors (73606007).

16017286993 is a wasteful number, since it uses less digits than its factorization.

16017286993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21011.

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 16017286993 in words is "sixteen billion, seventeen million, two hundred eighty-six thousand, nine hundred ninety-three".