161102743149 has 4 divisors (see below), whose sum is σ = 214803657536. Its totient is φ = 107401828764.

The previous prime is 161102743121. The next prime is 161102743169. The reversal of 161102743149 is 941347201161.

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 161102743149 - 2⁹ = 161102742637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161102743169) 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, 26850457189 + ... + 26850457194.

It is an arithmetic number, because the mean of its divisors is an integer number (53700914384).

Almost surely, 2^161102743149 is an apocalyptic number.

It is an amenable number.

161102743149 is a deficient number, since it is larger than the sum of its proper divisors (53700914387).

161102743149 is an equidigital number, since it uses as much as digits as its factorization.

161102743149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53700914386.

The product of its (nonzero) digits is 36288, while the sum is 39.

The spelling of 161102743149 in words is "one hundred sixty-one billion, one hundred two million, seven hundred forty-three thousand, one hundred forty-nine".