63660532512 has 24 divisors (see below), whose sum is σ = 167108898096. Its totient is φ = 21220177472.

The previous prime is 63660532511. The next prime is 63660532513. The reversal of 63660532512 is 21523506636.

It is an interprime number because it is at equal distance from previous prime (63660532511) and next prime (63660532513).

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×63660532512² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63660532511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331565178 + ... + 331565369.

It is an arithmetic number, because the mean of its divisors is an integer number (6962870754).

Almost surely, 2^63660532512 is an apocalyptic number.

It is an amenable number.

63660532512 is an abundant number, since it is smaller than the sum of its proper divisors (103448365584).

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

63660532512 is a wasteful number, since it uses less digits than its factorization.

63660532512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663130560 (or 663130552 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 39.

The spelling of 63660532512 in words is "sixty-three billion, six hundred sixty million, five hundred thirty-two thousand, five hundred twelve".