66734390854983 has 8 divisors (see below), whose sum is σ = 90872362015488. Its totient is φ = 43543006798904.

The previous prime is 66734390854981. The next prime is 66734390854997. The reversal of 66734390854983 is 38945809343766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66734390854983 - 2¹ = 66734390854981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66734390854981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236646775941 + ... + 236646776222.

It is an arithmetic number, because the mean of its divisors is an integer number (11359045251936).

Almost surely, 2^{66734390854983} is an apocalyptic number.

66734390854983 is a deficient number, since it is larger than the sum of its proper divisors (24137971160505).

66734390854983 is a wasteful number, since it uses less digits than its factorization.

66734390854983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473293552213.

The product of its (nonzero) digits is 2821754880, while the sum is 75.

The spelling of 66734390854983 in words is "sixty-six trillion, seven hundred thirty-four billion, three hundred ninety million, eight hundred fifty-four thousand, nine hundred eighty-three".