161434087801 has 4 divisors (see below), whose sum is σ = 184496100352. Its totient is φ = 138372075252.

The previous prime is 161434087777. The next prime is 161434087847. The reversal of 161434087801 is 108780434161.

161434087801 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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161434087801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161434081801) 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, 11531006265 + ... + 11531006278.

It is an arithmetic number, because the mean of its divisors is an integer number (46124025088).

Almost surely, 2^161434087801 is an apocalyptic number.

It is an amenable number.

161434087801 is a deficient number, since it is larger than the sum of its proper divisors (23062012551).

161434087801 is an equidigital number, since it uses as much as digits as its factorization.

161434087801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23062012550.

The product of its (nonzero) digits is 129024, while the sum is 43.

The spelling of 161434087801 in words is "one hundred sixty-one billion, four hundred thirty-four million, eighty-seven thousand, eight hundred one".