21751727714 has 8 divisors (see below), whose sum is σ = 32631368400. Its totient is φ = 10874604916.

The previous prime is 21751727689. The next prime is 21751727717. The reversal of 21751727714 is 41772715712.

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 (21751727717) 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, 607724 + ... + 642519.

It is an arithmetic number, because the mean of its divisors is an integer number (4078921050).

Almost surely, 2^21751727714 is an apocalyptic number.

21751727714 is a deficient number, since it is larger than the sum of its proper divisors (10879640686).

21751727714 is a wasteful number, since it uses less digits than its factorization.

21751727714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258944.

The product of its digits is 192080, while the sum is 44.

The spelling of 21751727714 in words is "twenty-one billion, seven hundred fifty-one million, seven hundred twenty-seven thousand, seven hundred fourteen".