63242636820481 has 4 divisors (see below), whose sum is σ = 63424892258352. Its totient is φ = 63060381382612.

The previous prime is 63242636820463. The next prime is 63242636820509. The reversal of 63242636820481 is 18402863624236.

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 63242636820481 - 2⁵ = 63242636820449 is a prime.

It is a super-2 number, since 2×63242636820481² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63242636820421) 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, 91127718415 + ... + 91127719108.

It is an arithmetic number, because the mean of its divisors is an integer number (15856223064588).

Almost surely, 2^{63242636820481} is an apocalyptic number.

It is an amenable number.

63242636820481 is a deficient number, since it is larger than the sum of its proper divisors (182255437871).

63242636820481 is a wasteful number, since it uses less digits than its factorization.

63242636820481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182255437870.

The product of its (nonzero) digits is 15925248, while the sum is 55.

The spelling of 63242636820481 in words is "sixty-three trillion, two hundred forty-two billion, six hundred thirty-six million, eight hundred twenty thousand, four hundred eighty-one".