66012733734 has 64 divisors (see below), whose sum is σ = 140821244928. Its totient is φ = 20583305600.

The previous prime is 66012733649. The next prime is 66012733741. The reversal of 66012733734 is 43733721066.

It is a congruent number.

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, 2260144 + ... + 2289164.

It is an arithmetic number, because the mean of its divisors is an integer number (2200331952).

Almost surely, 2^66012733734 is an apocalyptic number.

66012733734 is an abundant number, since it is smaller than the sum of its proper divisors (74808511194).

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

66012733734 is a wasteful number, since it uses less digits than its factorization.

66012733734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29413.

The product of its (nonzero) digits is 381024, while the sum is 42.

The spelling of 66012733734 in words is "sixty-six billion, twelve million, seven hundred thirty-three thousand, seven hundred thirty-four".