248371861489 has 2 divisors, whose sum is σ = 248371861490. Its totient is φ = 248371861488.

The previous prime is 248371861447. The next prime is 248371861559. The reversal of 248371861489 is 984168173842.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194005011600 + 54366849889 = 440460^2 + 233167^2 .

It is a cyclic number.

It is not a de Polignac number, because 248371861489 - 2²³ = 248363472881 is a prime.

It is a super-2 number, since 2×248371861489² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (248371862489) 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 as a sum of consecutive naturals, namely, 124185930744 + 124185930745.

It is an arithmetic number, because the mean of its divisors is an integer number (124185930745).

Almost surely, 2^248371861489 is an apocalyptic number.

It is an amenable number.

248371861489 is a deficient number, since it is larger than the sum of its proper divisors (1).

248371861489 is an equidigital number, since it uses as much as digits as its factorization.

248371861489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18579456, while the sum is 61.

The spelling of 248371861489 in words is "two hundred forty-eight billion, three hundred seventy-one million, eight hundred sixty-one thousand, four hundred eighty-nine".