165154655262601 has 6 divisors (see below), whose sum is σ = 174304497659802. Its totient is φ = 156462304985280.

The previous prime is 165154655262547. The next prime is 165154655262607. The reversal of 165154655262601 is 106262556451561.

It can be written as a sum of positive squares in only one way, i.e., 161471000351376 + 3683654911225 = 12707124^2 + 1919285^2 .

It is not a de Polignac number, because 165154655262601 - 2³¹ = 165152507778953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165154655262607) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 228746059560 + ... + 228746060281.

It is an arithmetic number, because the mean of its divisors is an integer number (29050749609967).

Almost surely, 2^{165154655262601} is an apocalyptic number.

It is an amenable number.

165154655262601 is a deficient number, since it is larger than the sum of its proper divisors (9149842397201).

165154655262601 is an equidigital number, since it uses as much as digits as its factorization.

165154655262601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457492119879 (or 457492119860 counting only the distinct ones).

The product of its (nonzero) digits is 12960000, while the sum is 55.

The spelling of 165154655262601 in words is "one hundred sixty-five trillion, one hundred fifty-four billion, six hundred fifty-five million, two hundred sixty-two thousand, six hundred one".