21467225662643 has 4 divisors (see below), whose sum is σ = 21467272268280. Its totient is φ = 21467179057008.

The previous prime is 21467225662637. The next prime is 21467225662657. The reversal of 21467225662643 is 34626652276412.

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 21467225662643 - 2¹⁰ = 21467225661619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21467225662843) 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, 22604930 + ... + 23535447.

It is an arithmetic number, because the mean of its divisors is an integer number (5366818067070).

Almost surely, 2^{21467225662643} is an apocalyptic number.

21467225662643 is a deficient number, since it is larger than the sum of its proper divisors (46605637).

21467225662643 is an equidigital number, since it uses as much as digits as its factorization.

21467225662643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46605636.

The product of its digits is 34836480, while the sum is 56.

The spelling of 21467225662643 in words is "twenty-one trillion, four hundred sixty-seven billion, two hundred twenty-five million, six hundred sixty-two thousand, six hundred forty-three".