21356150103056 has 10 divisors (see below), whose sum is σ = 41377540824702. Its totient is φ = 10678075051520.

The previous prime is 21356150103047. The next prime is 21356150103103. The reversal of 21356150103056 is 65030105165312.

It can be written as a sum of positive squares in only one way, i.e., 16347595622656 + 5008554480400 = 4043216^2 + 2237980^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 667379690705 + ... + 667379690736.

Almost surely, 2^{21356150103056} is an apocalyptic number.

It is an amenable number.

21356150103056 is a deficient number, since it is larger than the sum of its proper divisors (20021390721646).

21356150103056 is a wasteful number, since it uses less digits than its factorization.

21356150103056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334759381449 (or 1334759381443 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 38.

Adding to 21356150103056 its reverse (65030105165312), we get a palindrome (86386255268368).

The spelling of 21356150103056 in words is "twenty-one trillion, three hundred fifty-six billion, one hundred fifty million, one hundred three thousand, fifty-six".