21282769067 has 16 divisors (see below), whose sum is σ = 24434721792. Its totient is φ = 18158807040.

The previous prime is 21282769021. The next prime is 21282769091. The reversal of 21282769067 is 76096728212.

It is a cyclic number.

It is not a de Polignac number, because 21282769067 - 2⁸ = 21282768811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21282769367) 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, 3362768 + ... + 3369090.

It is an arithmetic number, because the mean of its divisors is an integer number (1527170112).

Almost surely, 2^21282769067 is an apocalyptic number.

21282769067 is a deficient number, since it is larger than the sum of its proper divisors (3151952725).

21282769067 is a wasteful number, since it uses less digits than its factorization.

21282769067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8458.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The spelling of 21282769067 in words is "twenty-one billion, two hundred eighty-two million, seven hundred sixty-nine thousand, sixty-seven".