161698302358 has 4 divisors (see below), whose sum is σ = 242547453540. Its totient is φ = 80849151178.

The previous prime is 161698302347. The next prime is 161698302361. The reversal of 161698302358 is 853203896161.

161698302358 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 an emirpimes, since its reverse is a distinct semiprime: 853203896161 = 19 ⋅44905468219.

It is a super-2 number, since 2×161698302358² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 40424575588 + ... + 40424575591.

It is an arithmetic number, because the mean of its divisors is an integer number (60636863385).

Almost surely, 2^161698302358 is an apocalyptic number.

161698302358 is a deficient number, since it is larger than the sum of its proper divisors (80849151182).

161698302358 is an equidigital number, since it uses as much as digits as its factorization.

161698302358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80849151181.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 161698302358 in words is "one hundred sixty-one billion, six hundred ninety-eight million, three hundred two thousand, three hundred fifty-eight".