161782238801 has 8 divisors (see below), whose sum is σ = 162592804608. Its totient is φ = 160973244000.

The previous prime is 161782238791. The next prime is 161782238819. The reversal of 161782238801 is 108832287161.

161782238801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161782238801 - 2¹⁴ = 161782222417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161782238881) 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 7 ways as a sum of consecutive naturals, for example, 186005 + ... + 598466.

It is an arithmetic number, because the mean of its divisors is an integer number (20324100576).

Almost surely, 2^161782238801 is an apocalyptic number.

It is an amenable number.

161782238801 is a deficient number, since it is larger than the sum of its proper divisors (810565807).

161782238801 is an equidigital number, since it uses as much as digits as its factorization.

161782238801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785503.

The product of its (nonzero) digits is 258048, while the sum is 47.

The spelling of 161782238801 in words is "one hundred sixty-one billion, seven hundred eighty-two million, two hundred thirty-eight thousand, eight hundred one".