161293016773 has 4 divisors (see below), whose sum is σ = 184334876320. Its totient is φ = 138251157228.

The previous prime is 161293016713. The next prime is 161293016839. The reversal of 161293016773 is 377610392161.

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 a cyclic number.

It is not a de Polignac number, because 161293016773 - 2²⁹ = 160756145861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161293016713) 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, 11520929763 + ... + 11520929776.

It is an arithmetic number, because the mean of its divisors is an integer number (46083719080).

Almost surely, 2^161293016773 is an apocalyptic number.

It is an amenable number.

161293016773 is a deficient number, since it is larger than the sum of its proper divisors (23041859547).

161293016773 is an equidigital number, since it uses as much as digits as its factorization.

161293016773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23041859546.

The product of its (nonzero) digits is 285768, while the sum is 46.

The spelling of 161293016773 in words is "one hundred sixty-one billion, two hundred ninety-three million, sixteen thousand, seven hundred seventy-three".