66383985162573 has 24 divisors (see below), whose sum is σ = 103265242615808. Its totient is φ = 40851182462112.

The previous prime is 66383985162559. The next prime is 66383985162581. The reversal of 66383985162573 is 37526158938366.

66383985162573 is a `hidden beast` number, since 6 + 6 + 3 + 8 + 39 + 8 + 5 + 16 + 2 + 573 = 666.

It is not a de Polignac number, because 66383985162573 - 2¹⁶ = 66383985097037 is a prime.

It is a hoax number, since the sum of its digits (72) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66383985162673) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6224436 + ... + 13096242.

Almost surely, 2^{66383985162573} is an apocalyptic number.

It is an amenable number.

66383985162573 is a deficient number, since it is larger than the sum of its proper divisors (36881257453235).

66383985162573 is a wasteful number, since it uses less digits than its factorization.

66383985162573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6954393 (or 6954390 counting only the distinct ones).

The product of its digits is 1175731200, while the sum is 72.

The spelling of 66383985162573 in words is "sixty-six trillion, three hundred eighty-three billion, nine hundred eighty-five million, one hundred sixty-two thousand, five hundred seventy-three".