165161206468036 has 27 divisors (see below), whose sum is σ = 297056626930119. Its totient is φ = 80348232384288.

The previous prime is 165161206468033. The next prime is 165161206468091. The reversal of 165161206468036 is 630864602161561.

It is a happy number.

The square root of 165161206468036 is 12851506.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 125388709244100 + 39772497223936 = 11197710^2 + 6306544^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165161206468033) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 950924610 + ... + 951098278.

Almost surely, 2^{165161206468036} is an apocalyptic number.

165161206468036 is the 12851506-th square number.

It is an amenable number.

165161206468036 is a deficient number, since it is larger than the sum of its proper divisors (131895420462083).

165161206468036 is an frugal number, since it uses more digits than its factorization.

165161206468036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347416 (or 173708 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 165161206468036 in words is "one hundred sixty-five trillion, one hundred sixty-one billion, two hundred six million, four hundred sixty-eight thousand, thirty-six".