159998428357 has 4 divisors (see below), whose sum is σ = 160068945580. Its totient is φ = 159927911136.

The previous prime is 159998428273. The next prime is 159998428427. The reversal of 159998428357 is 753824899951.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7862546241 + 152135882116 = 88671^2 + 390046^2 .

It is a cyclic number.

It is not a de Polignac number, because 159998428357 - 2¹⁵ = 159998395589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159998428657) 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, 35255208 + ... + 35259745.

It is an arithmetic number, because the mean of its divisors is an integer number (40017236395).

Almost surely, 2^159998428357 is an apocalyptic number.

It is an amenable number.

159998428357 is a deficient number, since it is larger than the sum of its proper divisors (70517223).

159998428357 is an equidigital number, since it uses as much as digits as its factorization.

159998428357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70517222.

The product of its digits is 195955200, while the sum is 70.

The spelling of 159998428357 in words is "one hundred fifty-nine billion, nine hundred ninety-eight million, four hundred twenty-eight thousand, three hundred fifty-seven".