21132536067 has 24 divisors (see below), whose sum is σ = 31787857920. Its totient is φ = 14029371720.

The previous prime is 21132536057. The next prime is 21132536071. The reversal of 21132536067 is 76063523112.

21132536067 is a `hidden beast` number, since 2 + 11 + 32 + 5 + 3 + 606 + 7 = 666.

It is not a de Polignac number, because 21132536067 - 2¹⁰ = 21132535043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21132536057) 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 23 ways as a sum of consecutive naturals, for example, 123859 + ... + 240012.

It is an arithmetic number, because the mean of its divisors is an integer number (1324494080).

Almost surely, 2^21132536067 is an apocalyptic number.

21132536067 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

21132536067 is a deficient number, since it is larger than the sum of its proper divisors (10655321853).

21132536067 is an equidigital number, since it uses as much as digits as its factorization.

21132536067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364125 (or 364113 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The spelling of 21132536067 in words is "twenty-one billion, one hundred thirty-two million, five hundred thirty-six thousand, sixty-seven".