66235364407 has 16 divisors (see below), whose sum is σ = 69957972000. Its totient is φ = 62621282304.

The previous prime is 66235364399. The next prime is 66235364411. The reversal of 66235364407 is 70446353266.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 66235364407 - 2³ = 66235364399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66235364707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181719 + ... + 406807.

It is an arithmetic number, because the mean of its divisors is an integer number (4372373250).

Almost surely, 2^66235364407 is an apocalyptic number.

66235364407 is a deficient number, since it is larger than the sum of its proper divisors (3722607593).

66235364407 is a wasteful number, since it uses less digits than its factorization.

66235364407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225330.

The product of its (nonzero) digits is 2177280, while the sum is 46.

The spelling of 66235364407 in words is "sixty-six billion, two hundred thirty-five million, three hundred sixty-four thousand, four hundred seven".