165402585001 has 2 divisors, whose sum is σ = 165402585002. Its totient is φ = 165402585000.

The previous prime is 165402584989. The next prime is 165402585013. The reversal of 165402585001 is 100585204561.

It is a balanced prime because it is at equal distance from previous prime (165402584989) and next prime (165402585013).

It can be written as a sum of positive squares in only one way, i.e., 97531914601 + 67870670400 = 312301^2 + 260520^2 .

It is an emirp because it is prime and its reverse (100585204561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165402585001 - 2⁵ = 165402584969 is a prime.

It is not a weakly prime, because it can be changed into another prime (165402585041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82701292500 + 82701292501.

It is an arithmetic number, because the mean of its divisors is an integer number (82701292501).

Almost surely, 2^165402585001 is an apocalyptic number.

It is an amenable number.

165402585001 is a deficient number, since it is larger than the sum of its proper divisors (1).

165402585001 is an equidigital number, since it uses as much as digits as its factorization.

165402585001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48000, while the sum is 37.

Adding to 165402585001 its reverse (100585204561), we get a palindrome (265987789562).

The spelling of 165402585001 in words is "one hundred sixty-five billion, four hundred two million, five hundred eighty-five thousand, one".