21127923713 has 8 divisors (see below), whose sum is σ = 22779525888. Its totient is φ = 19480089744.

The previous prime is 21127923701. The next prime is 21127923721. The reversal of 21127923713 is 31732972112.

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 21127923713 - 2¹⁴ = 21127907329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21127923013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 930395 + ... + 952832.

It is an arithmetic number, because the mean of its divisors is an integer number (2847440736).

Almost surely, 2^21127923713 is an apocalyptic number.

It is an amenable number.

21127923713 is a deficient number, since it is larger than the sum of its proper divisors (1651602175).

21127923713 is a wasteful number, since it uses less digits than its factorization.

21127923713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884103.

The product of its digits is 31752, while the sum is 38.

The spelling of 21127923713 in words is "twenty-one billion, one hundred twenty-seven million, nine hundred twenty-three thousand, seven hundred thirteen".