248561812481 has 8 divisors (see below), whose sum is σ = 255035366784. Its totient is φ = 242119760400.

The previous prime is 248561812469. The next prime is 248561812501. The reversal of 248561812481 is 184218165842.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248561812481 is a prime.

It is a super-2 number, since 2×248561812481² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248561812181) 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 7 ways as a sum of consecutive naturals, for example, 7859570 + ... + 7891131.

It is an arithmetic number, because the mean of its divisors is an integer number (31879420848).

Almost surely, 2^248561812481 is an apocalyptic number.

It is an amenable number.

248561812481 is a deficient number, since it is larger than the sum of its proper divisors (6473554303).

248561812481 is a wasteful number, since it uses less digits than its factorization.

248561812481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15751111.

The product of its digits is 983040, while the sum is 50.

The spelling of 248561812481 in words is "two hundred forty-eight billion, five hundred sixty-one million, eight hundred twelve thousand, four hundred eighty-one".