21467488047 has 8 divisors (see below), whose sum is σ = 28657848240. Its totient is φ = 14294393280.

The previous prime is 21467488039. The next prime is 21467488109. The reversal of 21467488047 is 74088476412.

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

It is not a de Polignac number, because 21467488047 - 2³ = 21467488039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21467488037) 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, 4313454 + ... + 4318427.

It is an arithmetic number, because the mean of its divisors is an integer number (3582231030).

Almost surely, 2^21467488047 is an apocalyptic number.

21467488047 is a deficient number, since it is larger than the sum of its proper divisors (7190360193).

21467488047 is an equidigital number, since it uses as much as digits as its factorization.

21467488047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8632713.

The product of its (nonzero) digits is 2408448, while the sum is 51.

The spelling of 21467488047 in words is "twenty-one billion, four hundred sixty-seven million, four hundred eighty-eight thousand, forty-seven".