21223664152453 has 8 divisors (see below), whose sum is σ = 24255791539200. Its totient is φ = 18191580606960.

The previous prime is 21223664152307. The next prime is 21223664152477. The reversal of 21223664152453 is 35425146632212.

It is a happy number.

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 21223664152453 - 2¹³ = 21223664144261 is a prime.

It is a super-2 number, since 2×21223664152453² (a number of 27 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 (21223664102453) 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, 9916318 + ... + 11865103.

It is an arithmetic number, because the mean of its divisors is an integer number (3031973942400).

Almost surely, 2^{21223664152453} is an apocalyptic number.

It is an amenable number.

21223664152453 is a deficient number, since it is larger than the sum of its proper divisors (3032127386747).

21223664152453 is a wasteful number, since it uses less digits than its factorization.

21223664152453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21920627.

The product of its digits is 2073600, while the sum is 46.

The spelling of 21223664152453 in words is "twenty-one trillion, two hundred twenty-three billion, six hundred sixty-four million, one hundred fifty-two thousand, four hundred fifty-three".