16947278242 has 4 divisors (see below), whose sum is σ = 25420917366. Its totient is φ = 8473639120.

The previous prime is 16947278203. The next prime is 16947278261. The reversal of 16947278242 is 24287274961.

16947278242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16315208361 + 632069881 = 127731^2 + 25141^2 .

It is a super-2 number, since 2×16947278242² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16947278242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4236819559 + ... + 4236819562.

Almost surely, 2^16947278242 is an apocalyptic number.

16947278242 is a deficient number, since it is larger than the sum of its proper divisors (8473639124).

16947278242 is an equidigital number, since it uses as much as digits as its factorization.

16947278242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8473639123.

The product of its digits is 2709504, while the sum is 52.

The spelling of 16947278242 in words is "sixteen billion, nine hundred forty-seven million, two hundred seventy-eight thousand, two hundred forty-two".