63345605544 has 96 divisors (see below), whose sum is σ = 185138728320. Its totient is φ = 19450793088.

The previous prime is 63345605539. The next prime is 63345605551. The reversal of 63345605544 is 44550654336.

63345605544 is a `hidden beast` number, since 6 + 3 + 3 + 45 + 60 + 5 + 544 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 63345605544.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 386349 + ... + 525315.

It is an arithmetic number, because the mean of its divisors is an integer number (1928528420).

Almost surely, 2^63345605544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63345605544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92569364160).

63345605544 is an abundant number, since it is smaller than the sum of its proper divisors (121793122776).

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

63345605544 is a wasteful number, since it uses less digits than its factorization.

63345605544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139479 (or 139472 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 45.

The spelling of 63345605544 in words is "sixty-three billion, three hundred forty-five million, six hundred five thousand, five hundred forty-four".