163530015655 has 4 divisors (see below), whose sum is σ = 196236018792. Its totient is φ = 130824012520.

The previous prime is 163530015619. The next prime is 163530015659. The reversal of 163530015655 is 556510035361.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 163530015655 - 2¹¹ = 163530013607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163530015659) 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, 16353001561 + ... + 16353001570.

It is an arithmetic number, because the mean of its divisors is an integer number (49059004698).

Almost surely, 2^163530015655 is an apocalyptic number.

163530015655 is a deficient number, since it is larger than the sum of its proper divisors (32706003137).

163530015655 is an equidigital number, since it uses as much as digits as its factorization.

163530015655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32706003136.

The product of its (nonzero) digits is 202500, while the sum is 40.

The spelling of 163530015655 in words is "one hundred sixty-three billion, five hundred thirty million, fifteen thousand, six hundred fifty-five".