21344261146 has 8 divisors (see below), whose sum is σ = 34479191124. Its totient is φ = 9851197440.

The previous prime is 21344261129. The next prime is 21344261161. The reversal of 21344261146 is 64116244312.

It can be written as a sum of positive squares in 2 ways, for example, as 20517411121 + 826850025 = 143239^2 + 28755^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410466535 + ... + 410466586.

Almost surely, 2^21344261146 is an apocalyptic number.

21344261146 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21344261146 is a deficient number, since it is larger than the sum of its proper divisors (13134929978).

21344261146 is a wasteful number, since it uses less digits than its factorization.

21344261146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820933136.

The product of its digits is 27648, while the sum is 34.

The spelling of 21344261146 in words is "twenty-one billion, three hundred forty-four million, two hundred sixty-one thousand, one hundred forty-six".