501263631241 has 4 divisors (see below), whose sum is σ = 502572413952. Its totient is φ = 499954848532.

The previous prime is 501263631199. The next prime is 501263631251. The reversal of 501263631241 is 142136362105.

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 501263631241 - 2²⁷ = 501129413513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 501263631197 and 501263631206.

It is not an unprimeable number, because it can be changed into a prime (501263631251) 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, 654390781 + ... + 654391546.

It is an arithmetic number, because the mean of its divisors is an integer number (125643103488).

Almost surely, 2^501263631241 is an apocalyptic number.

It is an amenable number.

501263631241 is a deficient number, since it is larger than the sum of its proper divisors (1308782711).

501263631241 is a wasteful number, since it uses less digits than its factorization.

501263631241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308782710.

The product of its (nonzero) digits is 25920, while the sum is 34.

Adding to 501263631241 its reverse (142136362105), we get a palindrome (643399993346).

The spelling of 501263631241 in words is "five hundred one billion, two hundred sixty-three million, six hundred thirty-one thousand, two hundred forty-one".