1263140360241 has 4 divisors (see below), whose sum is σ = 1684187146992. Its totient is φ = 842093573492.

The previous prime is 1263140360221. The next prime is 1263140360269. The reversal of 1263140360241 is 1420630413621.

It is a happy number.

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 not a de Polignac number, because 1263140360241 - 2⁷ = 1263140360113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1263140360201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210523393371 + ... + 210523393376.

It is an arithmetic number, because the mean of its divisors is an integer number (421046786748).

Almost surely, 2^{1263140360241} is an apocalyptic number.

It is an amenable number.

1263140360241 is a deficient number, since it is larger than the sum of its proper divisors (421046786751).

1263140360241 is an equidigital number, since it uses as much as digits as its factorization.

1263140360241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421046786750.

The product of its (nonzero) digits is 20736, while the sum is 33.

Adding to 1263140360241 its reverse (1420630413621), we get a palindrome (2683770773862).

The spelling of 1263140360241 in words is "one trillion, two hundred sixty-three billion, one hundred forty million, three hundred sixty thousand, two hundred forty-one".