21682324127 has 6 divisors (see below), whose sum is σ = 23032780608. Its totient is φ = 20406893024.

The previous prime is 21682324117. The next prime is 21682324133. The reversal of 21682324127 is 72142328612.

It is a happy number.

It is not a de Polignac number, because 21682324127 - 2²⁶ = 21615215263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21682324117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37512383 + ... + 37512960.

It is an arithmetic number, because the mean of its divisors is an integer number (3838796768).

Almost surely, 2^21682324127 is an apocalyptic number.

21682324127 is a deficient number, since it is larger than the sum of its proper divisors (1350456481).

21682324127 is an equidigital number, since it uses as much as digits as its factorization.

21682324127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75025377 (or 75025360 counting only the distinct ones).

The product of its digits is 64512, while the sum is 38.

The spelling of 21682324127 in words is "twenty-one billion, six hundred eighty-two million, three hundred twenty-four thousand, one hundred twenty-seven".