21612706325354 has 8 divisors (see below), whose sum is σ = 32422795720068. Its totient is φ = 10805107752000.

The previous prime is 21612706325339. The next prime is 21612706325387. The reversal of 21612706325354 is 45352360721612.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21493636471129 + 119069854225 = 4636123^2 + 345065^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21612706325299 and 21612706325308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 622683647 + ... + 622718354.

Almost surely, 2^{21612706325354} is an apocalyptic number.

21612706325354 is a deficient number, since it is larger than the sum of its proper divisors (10810089394714).

21612706325354 is a wasteful number, since it uses less digits than its factorization.

21612706325354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245410680.

The product of its (nonzero) digits is 1814400, while the sum is 47.

The spelling of 21612706325354 in words is "twenty-one trillion, six hundred twelve billion, seven hundred six million, three hundred twenty-five thousand, three hundred fifty-four".