248347361721 has 4 divisors (see below), whose sum is σ = 331129815632. Its totient is φ = 165564907812.

The previous prime is 248347361711. The next prime is 248347361813. The reversal of 248347361721 is 127163743842.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 248347361721 - 2²¹ = 248345264569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248347361701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41391226951 + ... + 41391226956.

It is an arithmetic number, because the mean of its divisors is an integer number (82782453908).

Almost surely, 2^248347361721 is an apocalyptic number.

It is an amenable number.

248347361721 is a deficient number, since it is larger than the sum of its proper divisors (82782453911).

248347361721 is an equidigital number, since it uses as much as digits as its factorization.

248347361721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82782453910.

The product of its digits is 1354752, while the sum is 48.

The spelling of 248347361721 in words is "two hundred forty-eight billion, three hundred forty-seven million, three hundred sixty-one thousand, seven hundred twenty-one".