63146742544640 has 72 divisors (see below), whose sum is σ = 151508698084800. Its totient is φ = 25216528603136.

The previous prime is 63146742544607. The next prime is 63146742544649. The reversal of 63146742544640 is 4644524764136.

63146742544640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×63146742544640² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63146742544649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40413074 + ... + 41946513.

It is an arithmetic number, because the mean of its divisors is an integer number (2104287473400).

Almost surely, 2^{63146742544640} is an apocalyptic number.

It is an amenable number.

63146742544640 is an abundant number, since it is smaller than the sum of its proper divisors (88361955540160).

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

63146742544640 is an equidigital number, since it uses as much as digits as its factorization.

63146742544640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82360207 (or 82360193 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 56.

The spelling of 63146742544640 in words is "sixty-three trillion, one hundred forty-six billion, seven hundred forty-two million, five hundred forty-four thousand, six hundred forty".