16486971331 has 4 divisors (see below), whose sum is σ = 17456793192. Its totient is φ = 15517149472.

The previous prime is 16486971329. The next prime is 16486971419. The reversal of 16486971331 is 13317968461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16486971331 - 2¹ = 16486971329 is a prime.

It is a super-2 number, since 2×16486971331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16486971731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 484910905 + ... + 484910938.

It is an arithmetic number, because the mean of its divisors is an integer number (4364198298).

Almost surely, 2^16486971331 is an apocalyptic number.

16486971331 is a deficient number, since it is larger than the sum of its proper divisors (969821861).

16486971331 is an equidigital number, since it uses as much as digits as its factorization.

16486971331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969821860.

The product of its digits is 653184, while the sum is 49.

The spelling of 16486971331 in words is "sixteen billion, four hundred eighty-six million, nine hundred seventy-one thousand, three hundred thirty-one".