66611511150 has 48 divisors (see below), whose sum is σ = 165717790704. Its totient is φ = 17707022080.

The previous prime is 66611511139. The next prime is 66611511193. The reversal of 66611511150 is 5111511666.

It is a Curzon number.

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 23 ways as a sum of consecutive naturals, for example, 652887 + ... + 747986.

It is an arithmetic number, because the mean of its divisors is an integer number (3452453973).

Almost surely, 2^66611511150 is an apocalyptic number.

66611511150 is an abundant number, since it is smaller than the sum of its proper divisors (99106279554).

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

66611511150 is a wasteful number, since it uses less digits than its factorization.

66611511150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401205 (or 1401200 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 33.

The spelling of 66611511150 in words is "sixty-six billion, six hundred eleven million, five hundred eleven thousand, one hundred fifty".