21034305655350 has 96 divisors (see below), whose sum is σ = 56178859322880. Its totient is φ = 5177575424640.

The previous prime is 21034305655267. The next prime is 21034305655393. The reversal of 21034305655350 is 5355650343012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 193227637 + ... + 193336463.

It is an arithmetic number, because the mean of its divisors is an integer number (585196451280).

Almost surely, 2^{21034305655350} is an apocalyptic number.

21034305655350 is an abundant number, since it is smaller than the sum of its proper divisors (35144553667530).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21034305655350 is a wasteful number, since it uses less digits than its factorization.

21034305655350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207974 (or 207969 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 42.

Adding to 21034305655350 its reverse (5355650343012), we get a palindrome (26389955998362).

The spelling of 21034305655350 in words is "twenty-one trillion, thirty-four billion, three hundred five million, six hundred fifty-five thousand, three hundred fifty".