66539374592146 has 8 divisors (see below), whose sum is σ = 99822357376560. Its totient is φ = 33265255466628.

The previous prime is 66539374592143. The next prime is 66539374592153. The reversal of 66539374592146 is 64129547393566.

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

It is a super-2 number, since 2×66539374592146² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66539374592143) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2215895956 + ... + 2215925983.

It is an arithmetic number, because the mean of its divisors is an integer number (12477794672070).

Almost surely, 2^{66539374592146} is an apocalyptic number.

66539374592146 is a deficient number, since it is larger than the sum of its proper divisors (33282982784414).

66539374592146 is a wasteful number, since it uses less digits than its factorization.

66539374592146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4431829448.

The product of its digits is 881798400, while the sum is 70.

The spelling of 66539374592146 in words is "sixty-six trillion, five hundred thirty-nine billion, three hundred seventy-four million, five hundred ninety-two thousand, one hundred forty-six".