21472168474 has 8 divisors (see below), whose sum is σ = 32327103168. Its totient is φ = 10696467420.

The previous prime is 21472168469. The next prime is 21472168477. The reversal of 21472168474 is 47486127412.

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

It is a super-2 number, since 2×21472168474² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21472168477) 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, 19807732 + ... + 19808815.

It is an arithmetic number, because the mean of its divisors is an integer number (4040887896).

Almost surely, 2^21472168474 is an apocalyptic number.

21472168474 is a deficient number, since it is larger than the sum of its proper divisors (10854934694).

21472168474 is a wasteful number, since it uses less digits than its factorization.

21472168474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39616820.

The product of its digits is 602112, while the sum is 46.

The spelling of 21472168474 in words is "twenty-one billion, four hundred seventy-two million, one hundred sixty-eight thousand, four hundred seventy-four".