21470066073725 has 48 divisors (see below), whose sum is σ = 27127661932800. Its totient is φ = 16853375185920.

The previous prime is 21470066073683. The next prime is 21470066073809. The reversal of 21470066073725 is 52737066007412.

It is not a de Polignac number, because 21470066073725 - 2¹⁸ = 21470065811581 is a prime.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 240626921 + ... + 240716129.

It is an arithmetic number, because the mean of its divisors is an integer number (565159623600).

Almost surely, 2^{21470066073725} is an apocalyptic number.

21470066073725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21470066073725 is a deficient number, since it is larger than the sum of its proper divisors (5657595859075).

21470066073725 is a wasteful number, since it uses less digits than its factorization.

21470066073725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90054 (or 90049 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 50.

The spelling of 21470066073725 in words is "twenty-one trillion, four hundred seventy billion, sixty-six million, seventy-three thousand, seven hundred twenty-five".