21150036324350 has 12 divisors (see below), whose sum is σ = 39339067563384. Its totient is φ = 8460014529720.

The previous prime is 21150036324337. The next prime is 21150036324409. The reversal of 21150036324350 is 5342363005112.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21150036324350.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 211500363194 + ... + 211500363293.

It is an arithmetic number, because the mean of its divisors is an integer number (3278255630282).

Almost surely, 2^{21150036324350} is an apocalyptic number.

21150036324350 is a deficient number, since it is larger than the sum of its proper divisors (18189031239034).

21150036324350 is a wasteful number, since it uses less digits than its factorization.

21150036324350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423000726499 (or 423000726494 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 21150036324350 its reverse (5342363005112), we get a palindrome (26492399329462).

The spelling of 21150036324350 in words is "twenty-one trillion, one hundred fifty billion, thirty-six million, three hundred twenty-four thousand, three hundred fifty".