63643404445500 has 192 divisors, whose sum is σ = 204736954705920. Its totient is φ = 15233403744000.

The previous prime is 63643404445441. The next prime is 63643404445531. The reversal of 63643404445500 is 554440434636.

It is a self number, because there is not a number n which added to its sum of digits gives 63643404445500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23109007 + ... + 25716006.

It is an arithmetic number, because the mean of its divisors is an integer number (1066338305760).

Almost surely, 2^{63643404445500} is an apocalyptic number.

63643404445500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63643404445500 is an abundant number, since it is smaller than the sum of its proper divisors (141093550260420).

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

63643404445500 is a wasteful number, since it uses less digits than its factorization.

63643404445500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48825125 (or 48825113 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 48.

The spelling of 63643404445500 in words is "sixty-three trillion, six hundred forty-three billion, four hundred four million, four hundred forty-five thousand, five hundred".