64531263433200 has 60 divisors (see below), whose sum is σ = 206715147201528. Its totient is φ = 17208336915200.

The previous prime is 64531263433181. The next prime is 64531263433279. The reversal of 64531263433200 is 233436213546.

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26888025231 + ... + 26888027630.

Almost surely, 2^{64531263433200} is an apocalyptic number.

64531263433200 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64531263433200 is an abundant number, since it is smaller than the sum of its proper divisors (142183883768328).

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

64531263433200 is a wasteful number, since it uses less digits than its factorization.

64531263433200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53776052882 (or 53776052871 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 42.

Adding to 64531263433200 its reverse (233436213546), we get a palindrome (64764699646746).

The spelling of 64531263433200 in words is "sixty-four trillion, five hundred thirty-one billion, two hundred sixty-three million, four hundred thirty-three thousand, two hundred".