161535413455 has 32 divisors (see below), whose sum is σ = 211309338240. Its totient is φ = 117833011200.

The previous prime is 161535413447. The next prime is 161535413509. The reversal of 161535413455 is 554314535161.

161535413455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161535413455 - 2³ = 161535413447 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2654611 + ... + 2714779.

It is an arithmetic number, because the mean of its divisors is an integer number (6603416820).

Almost surely, 2^161535413455 is an apocalyptic number.

161535413455 is a deficient number, since it is larger than the sum of its proper divisors (49773924785).

161535413455 is a wasteful number, since it uses less digits than its factorization.

161535413455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60691.

The product of its digits is 540000, while the sum is 43.

The spelling of 161535413455 in words is "one hundred sixty-one billion, five hundred thirty-five million, four hundred thirteen thousand, four hundred fifty-five".