66314243231431 has 16 divisors (see below), whose sum is σ = 75617815762944. Its totient is φ = 57611174505984.

The previous prime is 66314243231429. The next prime is 66314243231471. The reversal of 66314243231431 is 13413234241366.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 66314243231431 - 2¹ = 66314243231429 is a prime.

It is a super-2 number, since 2×66314243231431² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66314243231471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7595706 + ... + 13795768.

It is an arithmetic number, because the mean of its divisors is an integer number (4726113485184).

Almost surely, 2^{66314243231431} is an apocalyptic number.

66314243231431 is a deficient number, since it is larger than the sum of its proper divisors (9303572531513).

66314243231431 is a wasteful number, since it uses less digits than its factorization.

66314243231431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6248490.

The product of its digits is 746496, while the sum is 43.

Adding to 66314243231431 its reverse (13413234241366), we get a palindrome (79727477472797).

The spelling of 66314243231431 in words is "sixty-six trillion, three hundred fourteen billion, two hundred forty-three million, two hundred thirty-one thousand, four hundred thirty-one".