165252326442405 has 16 divisors (see below), whose sum is σ = 267129533880384. Its totient is φ = 87225970245120.

The previous prime is 165252326442367. The next prime is 165252326442491. The reversal of 165252326442405 is 504244623252561.

It is not a de Polignac number, because 165252326442405 - 2²⁶ = 165252259333541 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56787739591 + ... + 56787742500.

It is an arithmetic number, because the mean of its divisors is an integer number (16695595867524).

Almost surely, 2^{165252326442405} is an apocalyptic number.

165252326442405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165252326442405 is a deficient number, since it is larger than the sum of its proper divisors (101877207437979).

165252326442405 is a wasteful number, since it uses less digits than its factorization.

165252326442405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113575482196.

The product of its (nonzero) digits is 13824000, while the sum is 51.

Adding to 165252326442405 its reverse (504244623252561), we get a palindrome (669496949694966).

The spelling of 165252326442405 in words is "one hundred sixty-five trillion, two hundred fifty-two billion, three hundred twenty-six million, four hundred forty-two thousand, four hundred five".