161313155013 has 4 divisors (see below), whose sum is σ = 215084206688. Its totient is φ = 107542103340.

The previous prime is 161313154967. The next prime is 161313155033. The reversal of 161313155013 is 310551313161.

161313155013 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 161313155013 - 2⁸ = 161313154757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161313155033) 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, 26885525833 + ... + 26885525838.

It is an arithmetic number, because the mean of its divisors is an integer number (53771051672).

Almost surely, 2^161313155013 is an apocalyptic number.

It is an amenable number.

161313155013 is a deficient number, since it is larger than the sum of its proper divisors (53771051675).

161313155013 is an equidigital number, since it uses as much as digits as its factorization.

161313155013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53771051674.

The product of its (nonzero) digits is 4050, while the sum is 30.

Adding to 161313155013 its reverse (310551313161), we get a palindrome (471864468174).

The spelling of 161313155013 in words is "one hundred sixty-one billion, three hundred thirteen million, one hundred fifty-five thousand, thirteen".