21282427375 has 16 divisors (see below), whose sum is σ = 28975059360. Its totient is φ = 15478128000.

The previous prime is 21282427363. The next prime is 21282427379. The reversal of 21282427375 is 57372428212.

It is not a de Polignac number, because 21282427375 - 2²³ = 21274038767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21282427379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7737690 + ... + 7740439.

It is an arithmetic number, because the mean of its divisors is an integer number (1810941210).

Almost surely, 2^21282427375 is an apocalyptic number.

21282427375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21282427375 is a deficient number, since it is larger than the sum of its proper divisors (7692631985).

21282427375 is a wasteful number, since it uses less digits than its factorization.

21282427375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15478155 (or 15478145 counting only the distinct ones).

The product of its digits is 376320, while the sum is 43.

The spelling of 21282427375 in words is "twenty-one billion, two hundred eighty-two million, four hundred twenty-seven thousand, three hundred seventy-five".