66144067598 has 32 divisors (see below), whose sum is σ = 118350153216. Its totient is φ = 27108008928.

The previous prime is 66144067579. The next prime is 66144067607. The reversal of 66144067598 is 89576044166.

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 15 ways as a sum of consecutive naturals, for example, 1342040 + ... + 1390452.

It is an arithmetic number, because the mean of its divisors is an integer number (3698442288).

Almost surely, 2^66144067598 is an apocalyptic number.

66144067598 is a deficient number, since it is larger than the sum of its proper divisors (52206085618).

66144067598 is a wasteful number, since it uses less digits than its factorization.

66144067598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52688.

The product of its (nonzero) digits is 8709120, while the sum is 56.

The spelling of 66144067598 in words is "sixty-six billion, one hundred forty-four million, sixty-seven thousand, five hundred ninety-eight".