66413030677645 has 16 divisors (see below), whose sum is σ = 80339073840000. Its totient is φ = 52702431565248.

The previous prime is 66413030677639. The next prime is 66413030677649. The reversal of 66413030677645 is 54677603031466.

It is a cyclic number.

It is not a de Polignac number, because 66413030677645 - 2³⁵ = 66378670939277 is a prime.

It is a super-3 number, since 3×66413030677645³ (a number of 42 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66413030677645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66413030677649) 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, 59764065 + ... + 60865174.

It is an arithmetic number, because the mean of its divisors is an integer number (5021192115000).

Almost surely, 2^{66413030677645} is an apocalyptic number.

It is an amenable number.

66413030677645 is a deficient number, since it is larger than the sum of its proper divisors (13926043162355).

66413030677645 is a wasteful number, since it uses less digits than its factorization.

66413030677645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120630132.

The product of its (nonzero) digits is 45722880, while the sum is 58.

The spelling of 66413030677645 in words is "sixty-six trillion, four hundred thirteen billion, thirty million, six hundred seventy-seven thousand, six hundred forty-five".