63643063405340 has 24 divisors (see below), whose sum is σ = 135152123415120. Its totient is φ = 25171189121408.

The previous prime is 63643063405303. The next prime is 63643063405351. The reversal of 63643063405340 is 4350436034636.

It is a super-2 number, since 2×63643063405340² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17877263222 + ... + 17877266781.

It is an arithmetic number, because the mean of its divisors is an integer number (5631338475630).

Almost surely, 2^{63643063405340} is an apocalyptic number.

It is an amenable number.

63643063405340 is an abundant number, since it is smaller than the sum of its proper divisors (71509060009780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63643063405340 is a wasteful number, since it uses less digits than its factorization.

63643063405340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35754530101 (or 35754530099 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 47.

Adding to 63643063405340 its reverse (4350436034636), we get a palindrome (67993499439976).

The spelling of 63643063405340 in words is "sixty-three trillion, six hundred forty-three billion, sixty-three million, four hundred five thousand, three hundred forty".