165015550161041 has 2 divisors, whose sum is σ = 165015550161042. Its totient is φ = 165015550161040.

The previous prime is 165015550161019. The next prime is 165015550161113. The reversal of 165015550161041 is 140161055510561.

It is a happy number.

165015550161041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99860448720400 + 65155101440641 = 9993020^2 + 8071871^2 .

It is an emirp because it is prime and its reverse (140161055510561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165015550161041 - 2¹⁴ = 165015550144657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165015550161041.

It is not a weakly prime, because it can be changed into another prime (165015550161541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82507775080520 + 82507775080521.

It is an arithmetic number, because the mean of its divisors is an integer number (82507775080521).

Almost surely, 2^{165015550161041} is an apocalyptic number.

It is an amenable number.

165015550161041 is a deficient number, since it is larger than the sum of its proper divisors (1).

165015550161041 is an equidigital number, since it uses as much as digits as its factorization.

165015550161041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90000, while the sum is 41.

The spelling of 165015550161041 in words is "one hundred sixty-five trillion, fifteen billion, five hundred fifty million, one hundred sixty-one thousand, forty-one".