21835055672050 has 12 divisors (see below), whose sum is σ = 40613203550106. Its totient is φ = 8734022268800.

The previous prime is 21835055672029. The next prime is 21835055672057. The reversal of 21835055672050 is 5027655053812.

It can be written as a sum of positive squares in 3 ways, for example, as 21107509792681 + 727545879369 = 4594291^2 + 852963^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21835055671985 and 21835055672003.

It is not an unprimeable number, because it can be changed into a prime (21835055672057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 218350556671 + ... + 218350556770.

Almost surely, 2^{21835055672050} is an apocalyptic number.

21835055672050 is a deficient number, since it is larger than the sum of its proper divisors (18778147878056).

21835055672050 is a wasteful number, since it uses less digits than its factorization.

21835055672050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436701113453 (or 436701113448 counting only the distinct ones).

The product of its (nonzero) digits is 2520000, while the sum is 49.

The spelling of 21835055672050 in words is "twenty-one trillion, eight hundred thirty-five billion, fifty-five million, six hundred seventy-two thousand, fifty".