21416079318002 has 16 divisors (see below), whose sum is σ = 32458903851192. Its totient is φ = 10596469248000.

The previous prime is 21416079317929. The next prime is 21416079318047. The reversal of 21416079318002 is 20081397061412.

It is a Cunningham number, because it is equal to 4627751²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 18157220354641 + 3258858963361 = 4261129^2 + 1805231^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4386023 + ... + 7878410.

Almost surely, 2^{21416079318002} is an apocalyptic number.

21416079318002 is a deficient number, since it is larger than the sum of its proper divisors (11042824533190).

21416079318002 is a wasteful number, since it uses less digits than its factorization.

21416079318002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12273533.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 21416079318002 in words is "twenty-one trillion, four hundred sixteen billion, seventy-nine million, three hundred eighteen thousand, two".