163205665411503 has 16 divisors (see below), whose sum is σ = 255650832533376. Its totient is φ = 91303868761440.

The previous prime is 163205665411493. The next prime is 163205665411561. The reversal of 163205665411503 is 305114566502361.

It is not a de Polignac number, because 163205665411503 - 2⁴¹ = 161006642155951 is a prime.

It is a super-2 number, since 2×163205665411503² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163205665416503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190216392825 + ... + 190216393682.

It is an arithmetic number, because the mean of its divisors is an integer number (15978177033336).

Almost surely, 2^{163205665411503} is an apocalyptic number.

163205665411503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

163205665411503 is a deficient number, since it is larger than the sum of its proper divisors (92445167121873).

163205665411503 is a wasteful number, since it uses less digits than its factorization.

163205665411503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380432786534.

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 163205665411503 in words is "one hundred sixty-three trillion, two hundred five billion, six hundred sixty-five million, four hundred eleven thousand, five hundred three".