161530614535503 has 16 divisors (see below), whose sum is σ = 217557474355296. Its totient is φ = 106595914598400.

The previous prime is 161530614535429. The next prime is 161530614535513. The reversal of 161530614535503 is 305535416035161.

It is not a de Polignac number, because 161530614535503 - 2⁸ = 161530614535247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161530614535513) 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, 61085850 + ... + 63675287.

It is an arithmetic number, because the mean of its divisors is an integer number (13597342147206).

Almost surely, 2^{161530614535503} is an apocalyptic number.

161530614535503 is a deficient number, since it is larger than the sum of its proper divisors (56026859819793).

161530614535503 is a wasteful number, since it uses less digits than its factorization.

161530614535503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124765514.

The product of its (nonzero) digits is 2430000, while the sum is 48.

The spelling of 161530614535503 in words is "one hundred sixty-one trillion, five hundred thirty billion, six hundred fourteen million, five hundred thirty-five thousand, five hundred three".