165463526513 has 4 divisors (see below), whose sum is σ = 165465610980. Its totient is φ = 165461442048.

The previous prime is 165463526507. The next prime is 165463526519. The reversal of 165463526513 is 315625364561.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (165463526507) and next prime (165463526519).

It can be written as a sum of positive squares in 2 ways, for example, as 54635790049 + 110827736464 = 233743^2 + 332908^2 .

It is a cyclic number.

It is not a de Polignac number, because 165463526513 - 2²⁰ = 165462477937 is a prime.

It is a super-2 number, since 2×165463526513² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165463526519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 918248 + ... + 1083561.

It is an arithmetic number, because the mean of its divisors is an integer number (41366402745).

Almost surely, 2^165463526513 is an apocalyptic number.

It is an amenable number.

165463526513 is a deficient number, since it is larger than the sum of its proper divisors (2084467).

165463526513 is an equidigital number, since it uses as much as digits as its factorization.

165463526513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2084466.

The product of its digits is 1944000, while the sum is 47.

The spelling of 165463526513 in words is "one hundred sixty-five billion, four hundred sixty-three million, five hundred twenty-six thousand, five hundred thirteen".