16679245784258 has 4 divisors (see below), whose sum is σ = 25018868676390. Its totient is φ = 8339622892128.

The previous prime is 16679245784231. The next prime is 16679245784261. The reversal of 16679245784258 is 85248754297661.

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., 15351766205689 + 1327479578569 = 3918133^2 + 1152163^2 .

It is a super-2 number, since 2×16679245784258² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4169811446063 + ... + 4169811446066.

Almost surely, 2^{16679245784258} is an apocalyptic number.

16679245784258 is a deficient number, since it is larger than the sum of its proper divisors (8339622892132).

16679245784258 is an equidigital number, since it uses as much as digits as its factorization.

16679245784258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8339622892131.

The product of its digits is 1625702400, while the sum is 74.

The spelling of 16679245784258 in words is "sixteen trillion, six hundred seventy-nine billion, two hundred forty-five million, seven hundred eighty-four thousand, two hundred fifty-eight".