21332464354 has 8 divisors (see below), whose sum is σ = 32032704348. Its totient is φ = 10654896240.

The previous prime is 21332464313. The next prime is 21332464357. The reversal of 21332464354 is 45346423312.

It can be written as a sum of positive squares in 2 ways, for example, as 17588860129 + 3743604225 = 132623^2 + 61185^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21332464357) 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, 5665617 + ... + 5669380.

Almost surely, 2^21332464354 is an apocalyptic number.

21332464354 is a deficient number, since it is larger than the sum of its proper divisors (10700239994).

21332464354 is a wasteful number, since it uses less digits than its factorization.

21332464354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11335940.

The product of its digits is 207360, while the sum is 37.

Adding to 21332464354 its reverse (45346423312), we get a palindrome (66678887666).

The spelling of 21332464354 in words is "twenty-one billion, three hundred thirty-two million, four hundred sixty-four thousand, three hundred fifty-four".