16164878416 has 20 divisors (see below), whose sum is σ = 31326191424. Its totient is φ = 8080700000.

The previous prime is 16164878399. The next prime is 16164878461. The reversal of 16164878416 is 61487846161.

It is a happy number.

It is a super-2 number, since 2×16164878416² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30310 + ... + 182341.

Almost surely, 2^16164878416 is an apocalyptic number.

16164878416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16164878416 is a deficient number, since it is larger than the sum of its proper divisors (15161313008).

16164878416 is a wasteful number, since it uses less digits than its factorization.

16164878416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217410 (or 217404 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 52.

The spelling of 16164878416 in words is "sixteen billion, one hundred sixty-four million, eight hundred seventy-eight thousand, four hundred sixteen".