21632325375 has 32 divisors (see below), whose sum is σ = 36098382528. Its totient is φ = 11504486400.

The previous prime is 21632325361. The next prime is 21632325389. The reversal of 21632325375 is 57352323612.

It is an interprime number because it is at equal distance from previous prime (21632325361) and next prime (21632325389).

It is not a de Polignac number, because 21632325375 - 2⁸ = 21632325119 is a prime.

It is a super-2 number, since 2×21632325375² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 50667 + ... + 214083.

It is an arithmetic number, because the mean of its divisors is an integer number (1128074454).

Almost surely, 2^21632325375 is an apocalyptic number.

21632325375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21632325375 is a deficient number, since it is larger than the sum of its proper divisors (14466057153).

21632325375 is a wasteful number, since it uses less digits than its factorization.

21632325375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163788 (or 163778 counting only the distinct ones).

The product of its digits is 226800, while the sum is 39.

Adding to 21632325375 its reverse (57352323612), we get a palindrome (78984648987).

The spelling of 21632325375 in words is "twenty-one billion, six hundred thirty-two million, three hundred twenty-five thousand, three hundred seventy-five".