66314040423550 has 24 divisors (see below), whose sum is σ = 128706902806896. Its totient is φ = 25372328509440.

The previous prime is 66314040423503. The next prime is 66314040423551. The reversal of 66314040423550 is 5532404041366.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 66314040423497 and 66314040423506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66314040423551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28832190339 + ... + 28832192638.

It is an arithmetic number, because the mean of its divisors is an integer number (5362787616954).

Almost surely, 2^{66314040423550} is an apocalyptic number.

66314040423550 is a deficient number, since it is larger than the sum of its proper divisors (62392862383346).

66314040423550 is a wasteful number, since it uses less digits than its factorization.

66314040423550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57664383012 (or 57664383007 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 43.

The spelling of 66314040423550 in words is "sixty-six trillion, three hundred fourteen billion, forty million, four hundred twenty-three thousand, five hundred fifty".