665133250506043 has 8 divisors (see below), whose sum is σ = 725601739633776. Its totient is φ = 604665066376800.

The previous prime is 665133250506031. The next prime is 665133250506071. The reversal of 665133250506043 is 340605052331566.

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

It is a de Polignac number, because none of the positive numbers 2^k-665133250506043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (665133250506743) 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, 71677896 + ... + 80423797.

It is an arithmetic number, because the mean of its divisors is an integer number (90700217454222).

Almost surely, 2^{665133250506043} is an apocalyptic number.

665133250506043 is a deficient number, since it is larger than the sum of its proper divisors (60468489127733).

665133250506043 is a wasteful number, since it uses less digits than its factorization.

665133250506043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152499245.

The product of its (nonzero) digits is 5832000, while the sum is 49.

The spelling of 665133250506043 in words is "six hundred sixty-five trillion, one hundred thirty-three billion, two hundred fifty million, five hundred six thousand, forty-three".