165235570411 has 8 divisors (see below), whose sum is σ = 174190635920. Its totient is φ = 156306350592.

The previous prime is 165235570403. The next prime is 165235570471. The reversal of 165235570411 is 114075532561.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165235570411 - 2³ = 165235570403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165235570471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6448290 + ... + 6473863.

It is an arithmetic number, because the mean of its divisors is an integer number (21773829490).

Almost surely, 2^165235570411 is an apocalyptic number.

165235570411 is a deficient number, since it is larger than the sum of its proper divisors (8955065509).

165235570411 is a wasteful number, since it uses less digits than its factorization.

165235570411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12922845.

The product of its (nonzero) digits is 126000, while the sum is 40.

The spelling of 165235570411 in words is "one hundred sixty-five billion, two hundred thirty-five million, five hundred seventy thousand, four hundred eleven".