248975049989 has 4 divisors (see below), whose sum is σ = 248976121824. Its totient is φ = 248973978156.

The previous prime is 248975049937. The next prime is 248975049991. The reversal of 248975049989 is 989940579842.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 248975049989 - 2⁸ = 248975049733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248975019989) 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, 25337 + ... + 706110.

It is an arithmetic number, because the mean of its divisors is an integer number (62244030456).

Almost surely, 2^248975049989 is an apocalyptic number.

It is an amenable number.

248975049989 is a deficient number, since it is larger than the sum of its proper divisors (1071835).

248975049989 is an equidigital number, since it uses as much as digits as its factorization.

248975049989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071834.

The product of its (nonzero) digits is 470292480, while the sum is 74.

The spelling of 248975049989 in words is "two hundred forty-eight billion, nine hundred seventy-five million, forty-nine thousand, nine hundred eighty-nine".