21364113725137 has 8 divisors (see below), whose sum is σ = 21429331560800. Its totient is φ = 21298899948480.

The previous prime is 21364113725117. The next prime is 21364113725209. The reversal of 21364113725137 is 73152731146312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21364113725137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21364113725117) 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 7 ways as a sum of consecutive naturals, for example, 9700489 + ... + 11697337.

It is an arithmetic number, because the mean of its divisors is an integer number (2678666445100).

Almost surely, 2^{21364113725137} is an apocalyptic number.

It is an amenable number.

21364113725137 is a deficient number, since it is larger than the sum of its proper divisors (65217835663).

21364113725137 is a wasteful number, since it uses less digits than its factorization.

21364113725137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2029503.

The product of its digits is 635040, while the sum is 46.

The spelling of 21364113725137 in words is "twenty-one trillion, three hundred sixty-four billion, one hundred thirteen million, seven hundred twenty-five thousand, one hundred thirty-seven".