248660381721 has 8 divisors (see below), whose sum is σ = 331935862720. Its totient is φ = 165579244272.

The previous prime is 248660381701. The next prime is 248660381779. The reversal of 248660381721 is 127183066842.

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

It is not a de Polignac number, because 248660381721 - 2⁶ = 248660381657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248660381701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48582901 + ... + 48588018.

It is an arithmetic number, because the mean of its divisors is an integer number (41491982840).

Almost surely, 2^248660381721 is an apocalyptic number.

It is an amenable number.

248660381721 is a deficient number, since it is larger than the sum of its proper divisors (83275480999).

248660381721 is an equidigital number, since it uses as much as digits as its factorization.

248660381721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97171775.

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 248660381721 in words is "two hundred forty-eight billion, six hundred sixty million, three hundred eighty-one thousand, seven hundred twenty-one".