660136420513641 has 8 divisors (see below), whose sum is σ = 900651240390880. Its totient is φ = 429856273822752.

The previous prime is 660136420513631. The next prime is 660136420513657. The reversal of 660136420513641 is 146315024631066.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 660136420513641 - 2²⁵ = 660136386959209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660136420513631) 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, 2558668296436 + ... + 2558668296693.

It is an arithmetic number, because the mean of its divisors is an integer number (112581405048860).

Almost surely, 2^{660136420513641} is an apocalyptic number.

It is an amenable number.

660136420513641 is a deficient number, since it is larger than the sum of its proper divisors (240514819877239).

660136420513641 is a wasteful number, since it uses less digits than its factorization.

660136420513641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5117336593175.

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 660136420513641 in words is "six hundred sixty trillion, one hundred thirty-six billion, four hundred twenty million, five hundred thirteen thousand, six hundred forty-one".