248961363281 has 4 divisors (see below), whose sum is σ = 252677204592. Its totient is φ = 245245521972.

The previous prime is 248961363263. The next prime is 248961363319. The reversal of 248961363281 is 182363169842.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248961363281 is a prime.

It is a super-2 number, since 2×248961363281² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (248961363481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1857920555 + ... + 1857920688.

It is an arithmetic number, because the mean of its divisors is an integer number (63169301148).

Almost surely, 2^248961363281 is an apocalyptic number.

It is an amenable number.

248961363281 is a deficient number, since it is larger than the sum of its proper divisors (3715841311).

248961363281 is an equidigital number, since it uses as much as digits as its factorization.

248961363281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3715841310.

The product of its digits is 2985984, while the sum is 53.

The spelling of 248961363281 in words is "two hundred forty-eight billion, nine hundred sixty-one million, three hundred sixty-three thousand, two hundred eighty-one".