21613321371674 has 8 divisors (see below), whose sum is σ = 32459470466868. Its totient is φ = 10793497882720.

The previous prime is 21613321371673. The next prime is 21613321371703. The reversal of 21613321371674 is 47617312331612.

It can be written as a sum of positive squares in 2 ways, for example, as 21596328424225 + 16992947449 = 4647185^2 + 130357^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21613321371673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6581399507 + ... + 6581402790.

Almost surely, 2^{21613321371674} is an apocalyptic number.

21613321371674 is a deficient number, since it is larger than the sum of its proper divisors (10846149095194).

21613321371674 is a wasteful number, since it uses less digits than its factorization.

21613321371674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13162803120.

The product of its digits is 762048, while the sum is 47.

The spelling of 21613321371674 in words is "twenty-one trillion, six hundred thirteen billion, three hundred twenty-one million, three hundred seventy-one thousand, six hundred seventy-four".