66307311409 has 8 divisors (see below), whose sum is σ = 69287843520. Its totient is φ = 63334913136.

The previous prime is 66307311401. The next prime is 66307311431. The reversal of 66307311409 is 90411370366.

66307311409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 66307311409 - 2³ = 66307311401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66307311401) 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, 2016787 + ... + 2049400.

It is an arithmetic number, because the mean of its divisors is an integer number (8660980440).

Almost surely, 2^66307311409 is an apocalyptic number.

It is an amenable number.

66307311409 is a deficient number, since it is larger than the sum of its proper divisors (2980532111).

66307311409 is a wasteful number, since it uses less digits than its factorization.

66307311409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4066919.

The product of its (nonzero) digits is 81648, while the sum is 40.

The spelling of 66307311409 in words is "sixty-six billion, three hundred seven million, three hundred eleven thousand, four hundred nine".