21751404314 has 4 divisors (see below), whose sum is σ = 32627106474. Its totient is φ = 10875702156.

The previous prime is 21751404287. The next prime is 21751404319. The reversal of 21751404314 is 41340415712.

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., 17377830625 + 4373573689 = 131825^2 + 66133^2 .

It is not an unprimeable number, because it can be changed into a prime (21751404319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5437851077 + ... + 5437851080.

Almost surely, 2^21751404314 is an apocalyptic number.

21751404314 is a deficient number, since it is larger than the sum of its proper divisors (10875702160).

21751404314 is a wasteful number, since it uses less digits than its factorization.

21751404314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10875702159.

The product of its (nonzero) digits is 13440, while the sum is 32.

The spelling of 21751404314 in words is "twenty-one billion, seven hundred fifty-one million, four hundred four thousand, three hundred fourteen".