165500514795953 has 4 divisors (see below), whose sum is σ = 165500931351360. Its totient is φ = 165500098240548.

The previous prime is 165500514795893. The next prime is 165500514796003. The reversal of 165500514795953 is 359597415005561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 165500514795953 - 2¹⁶ = 165500514730417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 165500514795953.

It is not an unprimeable number, because it can be changed into a prime (165500514765953) 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, 207681173 + ... + 208476546.

It is an arithmetic number, because the mean of its divisors is an integer number (41375232837840).

Almost surely, 2^{165500514795953} is an apocalyptic number.

It is an amenable number.

165500514795953 is a deficient number, since it is larger than the sum of its proper divisors (416555407).

165500514795953 is an equidigital number, since it uses as much as digits as its factorization.

165500514795953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416555406.

The product of its (nonzero) digits is 127575000, while the sum is 65.

The spelling of 165500514795953 in words is "one hundred sixty-five trillion, five hundred billion, five hundred fourteen million, seven hundred ninety-five thousand, nine hundred fifty-three".