161301574535 has 4 divisors (see below), whose sum is σ = 193561889448. Its totient is φ = 129041259624.

The previous prime is 161301574493. The next prime is 161301574537. The reversal of 161301574535 is 535475103161.

161301574535 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 535475103161 = 83 ⋅6451507267.

It is a cyclic number.

It is not a de Polignac number, because 161301574535 - 2²⁴ = 161284797319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161301574492 and 161301574501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161301574537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16130157449 + ... + 16130157458.

It is an arithmetic number, because the mean of its divisors is an integer number (48390472362).

Almost surely, 2^161301574535 is an apocalyptic number.

161301574535 is a deficient number, since it is larger than the sum of its proper divisors (32260314913).

161301574535 is an equidigital number, since it uses as much as digits as its factorization.

161301574535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32260314912.

The product of its (nonzero) digits is 189000, while the sum is 41.

Adding to 161301574535 its reverse (535475103161), we get a palindrome (696776677696).

The spelling of 161301574535 in words is "one hundred sixty-one billion, three hundred one million, five hundred seventy-four thousand, five hundred thirty-five".