64534231750032 has 240 divisors, whose sum is σ = 203868609609600. Its totient is φ = 18876886640640.

The previous prime is 64534231749991. The next prime is 64534231750117. The reversal of 64534231750032 is 23005713243546.

It is a happy number.

64534231750032 is a `hidden beast` number, since 6 + 4 + 53 + 423 + 175 + 0 + 0 + 3 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 64534231750032.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 190603069 + ... + 190941347.

It is an arithmetic number, because the mean of its divisors is an integer number (849452540040).

Almost surely, 2^{64534231750032} 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 64534231750032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101934304804800).

64534231750032 is an abundant number, since it is smaller than the sum of its proper divisors (139334377859568).

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

64534231750032 is a wasteful number, since it uses less digits than its factorization.

64534231750032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342486 (or 342477 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 45.

Adding to 64534231750032 its reverse (23005713243546), we get a palindrome (87539944993578).

The spelling of 64534231750032 in words is "sixty-four trillion, five hundred thirty-four billion, two hundred thirty-one million, seven hundred fifty thousand, thirty-two".