21472304453 has 8 divisors (see below), whose sum is σ = 22608482400. Its totient is φ = 20336732208.

The previous prime is 21472304449. The next prime is 21472304479. The reversal of 21472304453 is 35440327412.

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 21472304453 - 2² = 21472304449 is a prime.

It is a super-2 number, since 2×21472304453² (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 (21472304153) 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, 77726 + ... + 221327.

It is an arithmetic number, because the mean of its divisors is an integer number (2826060300).

Almost surely, 2^21472304453 is an apocalyptic number.

It is an amenable number.

21472304453 is a deficient number, since it is larger than the sum of its proper divisors (1136177947).

21472304453 is a wasteful number, since it uses less digits than its factorization.

21472304453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302851.

The product of its (nonzero) digits is 80640, while the sum is 35.

The spelling of 21472304453 in words is "twenty-one billion, four hundred seventy-two million, three hundred four thousand, four hundred fifty-three".