165650643753 has 8 divisors (see below), whose sum is σ = 252420028608. Its totient is φ = 94657510704.

The previous prime is 165650643737. The next prime is 165650643757. The reversal of 165650643753 is 357346056561.

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

It is not a de Polignac number, because 165650643753 - 2⁴ = 165650643737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165650643696 and 165650643705.

It is not an unprimeable number, because it can be changed into a prime (165650643757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3944062926 + ... + 3944062967.

It is an arithmetic number, because the mean of its divisors is an integer number (31552503576).

Almost surely, 2^165650643753 is an apocalyptic number.

It is an amenable number.

165650643753 is a deficient number, since it is larger than the sum of its proper divisors (86769384855).

165650643753 is an equidigital number, since it uses as much as digits as its factorization.

165650643753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7888125903.

The product of its (nonzero) digits is 6804000, while the sum is 51.

The spelling of 165650643753 in words is "one hundred sixty-five billion, six hundred fifty million, six hundred forty-three thousand, seven hundred fifty-three".