21450544142302 has 16 divisors (see below), whose sum is σ = 35254169420400. Its totient is φ = 9707669835840.

The previous prime is 21450544142281. The next prime is 21450544142303. The reversal of 21450544142302 is 20324144505412.

It is a super-3 number, since 3×21450544142302³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21450544142303) 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, 2128869927 + ... + 2128880002.

It is an arithmetic number, because the mean of its divisors is an integer number (2203385588775).

Almost surely, 2^{21450544142302} is an apocalyptic number.

21450544142302 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21450544142302 is a deficient number, since it is larger than the sum of its proper divisors (13803625278098).

21450544142302 is a wasteful number, since it uses less digits than its factorization.

21450544142302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4257750171.

The product of its (nonzero) digits is 153600, while the sum is 37.

Adding to 21450544142302 its reverse (20324144505412), we get a palindrome (41774688647714).

The spelling of 21450544142302 in words is "twenty-one trillion, four hundred fifty billion, five hundred forty-four million, one hundred forty-two thousand, three hundred two".