16212618458 has 4 divisors (see below), whose sum is σ = 24318927690. Its totient is φ = 8106309228.

The previous prime is 16212618413. The next prime is 16212618481. The reversal of 16212618458 is 85481621261.

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., 12498569209 + 3714049249 = 111797^2 + 60943^2 .

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, 4053154613 + ... + 4053154616.

Almost surely, 2^16212618458 is an apocalyptic number.

16212618458 is a deficient number, since it is larger than the sum of its proper divisors (8106309232).

16212618458 is an equidigital number, since it uses as much as digits as its factorization.

16212618458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8106309231.

The product of its digits is 184320, while the sum is 44.

The spelling of 16212618458 in words is "sixteen billion, two hundred twelve million, six hundred eighteen thousand, four hundred fifty-eight".