21727401371 has 8 divisors (see below), whose sum is σ = 23399993904. Its totient is φ = 20054988000.

The previous prime is 21727401359. The next prime is 21727401389. The reversal of 21727401371 is 17310472712.

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

It is a cyclic number.

It is not a de Polignac number, because 21727401371 - 2⁶ = 21727401307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21727401671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312980 + ... + 376046.

It is an arithmetic number, because the mean of its divisors is an integer number (2924999238).

Almost surely, 2^21727401371 is an apocalyptic number.

21727401371 is a deficient number, since it is larger than the sum of its proper divisors (1672592533).

21727401371 is a wasteful number, since it uses less digits than its factorization.

21727401371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89581.

The product of its (nonzero) digits is 16464, while the sum is 35.

The spelling of 21727401371 in words is "twenty-one billion, seven hundred twenty-seven million, four hundred one thousand, three hundred seventy-one".