21368030467 has 4 divisors (see below), whose sum is σ = 24420606256. Its totient is φ = 18315454680.

The previous prime is 21368030461. The next prime is 21368030503. The reversal of 21368030467 is 76403086312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21368030467 - 2²³ = 21359641859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21368030461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1526287884 + ... + 1526287897.

It is an arithmetic number, because the mean of its divisors is an integer number (6105151564).

Almost surely, 2^21368030467 is an apocalyptic number.

21368030467 is a deficient number, since it is larger than the sum of its proper divisors (3052575789).

21368030467 is an equidigital number, since it uses as much as digits as its factorization.

21368030467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3052575788.

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 21368030467 in words is "twenty-one billion, three hundred sixty-eight million, thirty thousand, four hundred sixty-seven".