21253235072060 has 12 divisors (see below), whose sum is σ = 44631793651368. Its totient is φ = 8501294028816.

The previous prime is 21253235072051. The next prime is 21253235072063. The reversal of 21253235072060 is 6027053235212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21253235072063) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 531330876782 + ... + 531330876821.

It is an arithmetic number, because the mean of its divisors is an integer number (3719316137614).

Almost surely, 2^{21253235072060} is an apocalyptic number.

21253235072060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21253235072060 is an abundant number, since it is smaller than the sum of its proper divisors (23378558579308).

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

21253235072060 is a wasteful number, since it uses less digits than its factorization.

21253235072060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062661753612 (or 1062661753610 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 38.

The spelling of 21253235072060 in words is "twenty-one trillion, two hundred fifty-three billion, two hundred thirty-five million, seventy-two thousand, sixty".