165345554345340 has 48 divisors (see below), whose sum is σ = 463507771158432. Its totient is φ = 44040698397696.

The previous prime is 165345554345291. The next prime is 165345554345359. The reversal of 165345554345340 is 43543455543561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1607742769 + ... + 1607845608.

It is an arithmetic number, because the mean of its divisors is an integer number (9656411899134).

Almost surely, 2^{165345554345340} is an apocalyptic number.

165345554345340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165345554345340 is an abundant number, since it is smaller than the sum of its proper divisors (298162216813092).

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

165345554345340 is a wasteful number, since it uses less digits than its factorization.

165345554345340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3215589246 (or 3215589244 counting only the distinct ones).

The product of its (nonzero) digits is 129600000, while the sum is 57.

The spelling of 165345554345340 in words is "one hundred sixty-five trillion, three hundred forty-five billion, five hundred fifty-four million, three hundred forty-five thousand, three hundred forty".