165120426225545 has 8 divisors (see below), whose sum is σ = 226450870252224. Its totient is φ = 113225435126064.

The previous prime is 165120426225481. The next prime is 165120426225551. The reversal of 165120426225545 is 545522624021561.

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

It is a cyclic number.

It is not a de Polignac number, because 165120426225545 - 2⁶ = 165120426225481 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165120426225493 and 165120426225502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2358863231759 + ... + 2358863231828.

It is an arithmetic number, because the mean of its divisors is an integer number (28306358781528).

Almost surely, 2^{165120426225545} is an apocalyptic number.

It is an amenable number.

165120426225545 is a deficient number, since it is larger than the sum of its proper divisors (61330444026679).

165120426225545 is an equidigital number, since it uses as much as digits as its factorization.

165120426225545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4717726463599.

The product of its (nonzero) digits is 5760000, while the sum is 50.

The spelling of 165120426225545 in words is "one hundred sixty-five trillion, one hundred twenty billion, four hundred twenty-six million, two hundred twenty-five thousand, five hundred forty-five".