16868439034 has 4 divisors (see below), whose sum is σ = 25302658554. Its totient is φ = 8434219516.

The previous prime is 16868439017. The next prime is 16868439061. The reversal of 16868439034 is 43093486861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43093486861 = 26479 ⋅1627459.

It can be written as a sum of positive squares in only one way, i.e., 9377017225 + 7491421809 = 96835^2 + 86553^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4217109757 + ... + 4217109760.

Almost surely, 2^16868439034 is an apocalyptic number.

16868439034 is a deficient number, since it is larger than the sum of its proper divisors (8434219520).

16868439034 is an equidigital number, since it uses as much as digits as its factorization.

16868439034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8434219519.

The product of its (nonzero) digits is 2985984, while the sum is 52.

The spelling of 16868439034 in words is "sixteen billion, eight hundred sixty-eight million, four hundred thirty-nine thousand, thirty-four".