161535413434 has 8 divisors (see below), whose sum is σ = 242595406260. Its totient is φ = 80670278016.

The previous prime is 161535413419. The next prime is 161535413437. The reversal of 161535413434 is 434314535161.

It can be written as a sum of positive squares in 2 ways, for example, as 160508403225 + 1027010209 = 400635^2 + 32047^2 .

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

It is not an unprimeable number, because it can be changed into a prime (161535413437) 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, 48712279 + ... + 48715594.

Almost surely, 2^161535413434 is an apocalyptic number.

161535413434 is a deficient number, since it is larger than the sum of its proper divisors (81059992826).

161535413434 is an equidigital number, since it uses as much as digits as its factorization.

161535413434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97428704.

The product of its digits is 259200, while the sum is 40.

Adding to 161535413434 its reverse (434314535161), we get a palindrome (595849948595).

The spelling of 161535413434 in words is "one hundred sixty-one billion, five hundred thirty-five million, four hundred thirteen thousand, four hundred thirty-four".