66012337584 has 160 divisors (see below), whose sum is σ = 196391448000. Its totient is φ = 21212430336.

The previous prime is 66012337579. The next prime is 66012337591. The reversal of 66012337584 is 48573321066.

66012337584 is a `hidden beast` number, since 6 + 60 + 1 + 2 + 3 + 3 + 7 + 584 = 666.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1723312 + ... + 1761200.

It is an arithmetic number, because the mean of its divisors is an integer number (1227446550).

Almost surely, 2^66012337584 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 66012337584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98195724000).

66012337584 is an abundant number, since it is smaller than the sum of its proper divisors (130379110416).

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

66012337584 is a wasteful number, since it uses less digits than its factorization.

66012337584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38052 (or 38040 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 66012337584 in words is "sixty-six billion, twelve million, three hundred thirty-seven thousand, five hundred eighty-four".