16878070617 has 4 divisors (see below), whose sum is σ = 22504094160. Its totient is φ = 11252047076.

The previous prime is 16878070549. The next prime is 16878070637. The reversal of 16878070617 is 71607087861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71607087861 = 3 ⋅23869029287.

It is a cyclic number.

It is not a de Polignac number, because 16878070617 - 2⁸ = 16878070361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16878070617.

It is not an unprimeable number, because it can be changed into a prime (16878070637) 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 3 ways as a sum of consecutive naturals, for example, 2813011767 + ... + 2813011772.

It is an arithmetic number, because the mean of its divisors is an integer number (5626023540).

Almost surely, 2^16878070617 is an apocalyptic number.

It is an amenable number.

16878070617 is a deficient number, since it is larger than the sum of its proper divisors (5626023543).

16878070617 is an equidigital number, since it uses as much as digits as its factorization.

16878070617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5626023542.

The product of its (nonzero) digits is 790272, while the sum is 51.

The spelling of 16878070617 in words is "sixteen billion, eight hundred seventy-eight million, seventy thousand, six hundred seventeen".