165120426225546 has 64 divisors (see below), whose sum is σ = 368687506277376. Its totient is φ = 48866681404800.

The previous prime is 165120426225481. The next prime is 165120426225551. The reversal of 165120426225546 is 645522624021561.

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 31 ways as a sum of consecutive naturals, for example, 18826966 + ... + 26166686.

It is an arithmetic number, because the mean of its divisors is an integer number (5760742285584).

Almost surely, 2^{165120426225546} is an apocalyptic number.

165120426225546 is an abundant number, since it is smaller than the sum of its proper divisors (203567080051830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165120426225546 is a wasteful number, since it uses less digits than its factorization.

165120426225546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7347707.

The product of its (nonzero) digits is 6912000, while the sum is 51.

The spelling of 165120426225546 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-six".