21450124310536 has 16 divisors (see below), whose sum is σ = 41605844568300. Its totient is φ = 10355232425664.

The previous prime is 21450124310533. The next prime is 21450124310551. The reversal of 21450124310536 is 63501342105412.

It can be written as a sum of positive squares in 2 ways, for example, as 19695045168100 + 1755079142436 = 4437910^2 + 1324794^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21450124310495 and 21450124310504.

It is not an unprimeable number, because it can be changed into a prime (21450124310533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46228715955 + ... + 46228716418.

Almost surely, 2^{21450124310536} is an apocalyptic number.

It is an amenable number.

21450124310536 is a deficient number, since it is larger than the sum of its proper divisors (20155720257764).

21450124310536 is a wasteful number, since it uses less digits than its factorization.

21450124310536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92457432408 (or 92457432404 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 21450124310536 its reverse (63501342105412), we get a palindrome (84951466415948).

The spelling of 21450124310536 in words is "twenty-one trillion, four hundred fifty billion, one hundred twenty-four million, three hundred ten thousand, five hundred thirty-six".