21152052542010 has 64 divisors (see below), whose sum is σ = 56147485871232. Its totient is φ = 5065938567936.

The previous prime is 21152052541933. The next prime is 21152052542011. The reversal of 21152052542010 is 1024525025112.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (21152052542011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 732904924 + ... + 732933783.

It is an arithmetic number, because the mean of its divisors is an integer number (877304466738).

Almost surely, 2^{21152052542010} is an apocalyptic number.

21152052542010 is an abundant number, since it is smaller than the sum of its proper divisors (34995433329222).

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

21152052542010 is a wasteful number, since it uses less digits than its factorization.

21152052542010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465838767.

The product of its (nonzero) digits is 8000, while the sum is 30.

Adding to 21152052542010 its reverse (1024525025112), we get a palindrome (22176577567122).

The spelling of 21152052542010 in words is "twenty-one trillion, one hundred fifty-two billion, fifty-two million, five hundred forty-two thousand, ten".