66013510750 has 64 divisors (see below), whose sum is σ = 134903957760. Its totient is φ = 23988468000.

The previous prime is 66013510687. The next prime is 66013510831. The reversal of 66013510750 is 5701531066.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4444837 + ... + 4459663.

It is an arithmetic number, because the mean of its divisors is an integer number (2107874340).

Almost surely, 2^66013510750 is an apocalyptic number.

66013510750 is an abundant number, since it is smaller than the sum of its proper divisors (68890447010).

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

66013510750 is a wasteful number, since it uses less digits than its factorization.

66013510750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16474 (or 16464 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 34.

The spelling of 66013510750 in words is "sixty-six billion, thirteen million, five hundred ten thousand, seven hundred fifty".