66714371440409 has 8 divisors (see below), whose sum is σ = 83176359198528. Its totient is φ = 51985224498960.

The previous prime is 66714371440403. The next prime is 66714371440411. The reversal of 66714371440409 is 90404417341766.

It is a happy number.

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 66714371440409 - 2²⁰ = 66714370391833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66714371440403) 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, 433210204082 + ... + 433210204235.

It is an arithmetic number, because the mean of its divisors is an integer number (10397044899816).

Almost surely, 2^{66714371440409} is an apocalyptic number.

It is an amenable number.

66714371440409 is a deficient number, since it is larger than the sum of its proper divisors (16461987758119).

66714371440409 is a wasteful number, since it uses less digits than its factorization.

66714371440409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866420408335.

The product of its (nonzero) digits is 12192768, while the sum is 56.

The spelling of 66714371440409 in words is "sixty-six trillion, seven hundred fourteen billion, three hundred seventy-one million, four hundred forty thousand, four hundred nine".