16999081531 has 2 divisors, whose sum is σ = 16999081532. Its totient is φ = 16999081530.

The previous prime is 16999081529. The next prime is 16999081537. The reversal of 16999081531 is 13518099961.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16999081531 - 2¹ = 16999081529 is a prime.

It is a super-2 number, since 2×16999081531² (a number of 21 digits) contains 22 as substring.

Together with 16999081529, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16999081537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8499540765 + 8499540766.

It is an arithmetic number, because the mean of its divisors is an integer number (8499540766).

Almost surely, 2^16999081531 is an apocalyptic number.

16999081531 is a deficient number, since it is larger than the sum of its proper divisors (1).

16999081531 is an equidigital number, since it uses as much as digits as its factorization.

16999081531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 524880, while the sum is 52.

The spelling of 16999081531 in words is "sixteen billion, nine hundred ninety-nine million, eighty-one thousand, five hundred thirty-one".