66631775150 has 12 divisors (see below), whose sum is σ = 123935101872. Its totient is φ = 26652710040.

The previous prime is 66631775143. The next prime is 66631775167. The reversal of 66631775150 is 5157713666.

66631775150 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 66631775095 and 66631775104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 666317702 + ... + 666317801.

It is an arithmetic number, because the mean of its divisors is an integer number (10327925156).

Almost surely, 2^66631775150 is an apocalyptic number.

66631775150 is a deficient number, since it is larger than the sum of its proper divisors (57303326722).

66631775150 is a wasteful number, since it uses less digits than its factorization.

66631775150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332635515 (or 1332635510 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 47.

The spelling of 66631775150 in words is "sixty-six billion, six hundred thirty-one million, seven hundred seventy-five thousand, one hundred fifty".