16870516829 has 2 divisors, whose sum is σ = 16870516830. Its totient is φ = 16870516828.

The previous prime is 16870516807. The next prime is 16870516847. The reversal of 16870516829 is 92861507861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15426136804 + 1444380025 = 124202^2 + 38005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16870516829 is a prime.

It is a super-2 number, since 2×16870516829² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16870510829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8435258414 + 8435258415.

It is an arithmetic number, because the mean of its divisors is an integer number (8435258415).

Almost surely, 2^16870516829 is an apocalyptic number.

It is an amenable number.

16870516829 is a deficient number, since it is larger than the sum of its proper divisors (1).

16870516829 is an equidigital number, since it uses as much as digits as its factorization.

16870516829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 53.

The spelling of 16870516829 in words is "sixteen billion, eight hundred seventy million, five hundred sixteen thousand, eight hundred twenty-nine".