161502663 has 8 divisors (see below), whose sum is σ = 246099328. Its totient is φ = 92287224.

The previous prime is 161502637. The next prime is 161502673. The reversal of 161502663 is 366205161.

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

It is not a de Polignac number, because 161502663 - 2¹⁶ = 161437127 is a prime.

It is a super-2 number, since 2×161502663² = 52166220312183138, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161502663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161502673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3845281 + ... + 3845322.

It is an arithmetic number, because the mean of its divisors is an integer number (30762416).

Almost surely, 2^161502663 is an apocalyptic number.

161502663 is a deficient number, since it is larger than the sum of its proper divisors (84596665).

161502663 is an equidigital number, since it uses as much as digits as its factorization.

161502663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7690613.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 161502663 is about 12708.3698010406. The cubic root of 161502663 is about 544.5777533513.

It can be divided in two parts, 161502 and 663, that added together give a triangular number (162165 = T₅₆₉).

The spelling of 161502663 in words is "one hundred sixty-one million, five hundred two thousand, six hundred sixty-three".