163135613260605 has 24 divisors (see below), whose sum is σ = 268262156770272. Its totient is φ = 84654156059712.

The previous prime is 163135613260583. The next prime is 163135613260621. The reversal of 163135613260605 is 506062316531361.

It is not a de Polignac number, because 163135613260605 - 2¹⁶ = 163135613195069 is a prime.

It is a super-2 number, since 2×163135613260605² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3972115167 + ... + 3972156236.

It is an arithmetic number, because the mean of its divisors is an integer number (11177589865428).

Almost surely, 2^{163135613260605} is an apocalyptic number.

163135613260605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163135613260605 is a deficient number, since it is larger than the sum of its proper divisors (105126543509667).

163135613260605 is an equidigital number, since it uses as much as digits as its factorization.

163135613260605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7944271485 (or 7944271448 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 48.

Adding to 163135613260605 its reverse (506062316531361), we get a palindrome (669197929791966).

The spelling of 163135613260605 in words is "one hundred sixty-three trillion, one hundred thirty-five billion, six hundred thirteen million, two hundred sixty thousand, six hundred five".