161346813493773 has 4 divisors (see below), whose sum is σ = 215129084658368. Its totient is φ = 107564542329180.

The previous prime is 161346813493741. The next prime is 161346813493781. The reversal of 161346813493773 is 377394318643161.

It is a happy number.

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 161346813493773 - 2⁵ = 161346813493741 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 (161346813493273) 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, 26891135582293 + ... + 26891135582298.

It is an arithmetic number, because the mean of its divisors is an integer number (53782271164592).

Almost surely, 2^{161346813493773} is an apocalyptic number.

It is an amenable number.

161346813493773 is a deficient number, since it is larger than the sum of its proper divisors (53782271164595).

161346813493773 is an equidigital number, since it uses as much as digits as its factorization.

161346813493773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53782271164594.

The product of its digits is 164602368, while the sum is 66.

The spelling of 161346813493773 in words is "one hundred sixty-one trillion, three hundred forty-six billion, eight hundred thirteen million, four hundred ninety-three thousand, seven hundred seventy-three".