21472718426 has 8 divisors (see below), whose sum is σ = 32217258144. Its totient is φ = 10733632380.

The previous prime is 21472718413. The next prime is 21472718431. The reversal of 21472718426 is 62481727412.

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

It is a super-2 number, since 2×21472718426² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1353560 + ... + 1369331.

It is an arithmetic number, because the mean of its divisors is an integer number (4027157268).

Almost surely, 2^21472718426 is an apocalyptic number.

21472718426 is a deficient number, since it is larger than the sum of its proper divisors (10744539718).

21472718426 is a wasteful number, since it uses less digits than its factorization.

21472718426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2726836.

The product of its digits is 301056, while the sum is 44.

The spelling of 21472718426 in words is "twenty-one billion, four hundred seventy-two million, seven hundred eighteen thousand, four hundred twenty-six".