21463471567 has 8 divisors (see below), whose sum is σ = 22756063536. Its totient is φ = 20174216832.

The previous prime is 21463471553. The next prime is 21463471577. The reversal of 21463471567 is 76517436412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21463471567 - 2⁷ = 21463471439 is a prime.

It is a super-2 number, since 2×21463471567² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21463471537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 821053 + ... + 846790.

It is an arithmetic number, because the mean of its divisors is an integer number (2844507942).

Almost surely, 2^21463471567 is an apocalyptic number.

21463471567 is a deficient number, since it is larger than the sum of its proper divisors (1292591969).

21463471567 is a wasteful number, since it uses less digits than its factorization.

21463471567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1668617.

The product of its digits is 846720, while the sum is 46.

The spelling of 21463471567 in words is "twenty-one billion, four hundred sixty-three million, four hundred seventy-one thousand, five hundred sixty-seven".