66465173350 has 48 divisors (see below), whose sum is σ = 128377783296. Its totient is φ = 25574292000.

The previous prime is 66465173329. The next prime is 66465173447. The reversal of 66465173350 is 5337156466.

It is a self number, because there is not a number n which added to its sum of digits gives 66465173350.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130465 + ... + 387235.

It is an arithmetic number, because the mean of its divisors is an integer number (2674537152).

Almost surely, 2^66465173350 is an apocalyptic number.

66465173350 is a deficient number, since it is larger than the sum of its proper divisors (61912609946).

66465173350 is a wasteful number, since it uses less digits than its factorization.

66465173350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256981 (or 256976 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 46.

The spelling of 66465173350 in words is "sixty-six billion, four hundred sixty-five million, one hundred seventy-three thousand, three hundred fifty".