165545346066 has 16 divisors (see below), whose sum is σ = 345485939904. Its totient is φ = 52782574064.

The previous prime is 165545346013. The next prime is 165545346073. The reversal of 165545346066 is 660643545561.

It is a super-2 number, since 2×165545346066² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 599801841 + ... + 599802116.

It is an arithmetic number, because the mean of its divisors is an integer number (21592871244).

Almost surely, 2^165545346066 is an apocalyptic number.

165545346066 is an abundant number, since it is smaller than the sum of its proper divisors (179940593838).

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

165545346066 is a wasteful number, since it uses less digits than its factorization.

165545346066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199603985.

The product of its (nonzero) digits is 7776000, while the sum is 51.

The spelling of 165545346066 in words is "one hundred sixty-five billion, five hundred forty-five million, three hundred forty-six thousand, sixty-six".