148636816721 has 8 divisors (see below), whose sum is σ = 150836958720. Its totient is φ = 146441107872.

The previous prime is 148636816711. The next prime is 148636816799. The reversal of 148636816721 is 127618636841.

148636816721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 148636816721 - 2¹⁰ = 148636815697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148636816711) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1040705 + ... + 1174878.

It is an arithmetic number, because the mean of its divisors is an integer number (18854619840).

Almost surely, 2^148636816721 is an apocalyptic number.

It is an amenable number.

148636816721 is a deficient number, since it is larger than the sum of its proper divisors (2200141999).

148636816721 is an equidigital number, since it uses as much as digits as its factorization.

148636816721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2216575.

The product of its digits is 2322432, while the sum is 53.

The spelling of 148636816721 in words is "one hundred forty-eight billion, six hundred thirty-six million, eight hundred sixteen thousand, seven hundred twenty-one".