66507174470 has 24 divisors (see below), whose sum is σ = 131585271552. Its totient is φ = 24184426640.

The previous prime is 66507174451. The next prime is 66507174499. The reversal of 66507174470 is 7447170566.

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 11 ways as a sum of consecutive naturals, for example, 27481094 + ... + 27483513.

It is an arithmetic number, because the mean of its divisors is an integer number (5482719648).

Almost surely, 2^66507174470 is an apocalyptic number.

66507174470 is a deficient number, since it is larger than the sum of its proper divisors (65078097082).

66507174470 is a wasteful number, since it uses less digits than its factorization.

66507174470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54964636 (or 54964625 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 47.

The spelling of 66507174470 in words is "sixty-six billion, five hundred seven million, one hundred seventy-four thousand, four hundred seventy".