63534264236640 has 72 divisors (see below), whose sum is σ = 216810676712448. Its totient is φ = 16942470462720.

The previous prime is 63534264236623. The next prime is 63534264236647. The reversal of 63534264236640 is 4663246243536.

63534264236640 is a `hidden beast` number, since 6 + 3 + 5 + 342 + 6 + 4 + 236 + 64 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-3 number, since 3×63534264236640³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63534264236647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22060506976 + ... + 22060509855.

It is an arithmetic number, because the mean of its divisors is an integer number (3011259398784).

Almost surely, 2^{63534264236640} is an apocalyptic number.

63534264236640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63534264236640 is an abundant number, since it is smaller than the sum of its proper divisors (153276412475808).

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

63534264236640 is a wasteful number, since it uses less digits than its factorization.

63534264236640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44121016852 (or 44121016841 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 54.

The spelling of 63534264236640 in words is "sixty-three trillion, five hundred thirty-four billion, two hundred sixty-four million, two hundred thirty-six thousand, six hundred forty".