159890356117 has 2 divisors, whose sum is σ = 159890356118. Its totient is φ = 159890356116.

The previous prime is 159890356091. The next prime is 159890356141. The reversal of 159890356117 is 711653098951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129340210321 + 30550145796 = 359639^2 + 174786^2 .

It is an emirp because it is prime and its reverse (711653098951) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 159890356117 - 2¹⁵ = 159890323349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159890356147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79945178058 + 79945178059.

It is an arithmetic number, because the mean of its divisors is an integer number (79945178059).

Almost surely, 2^159890356117 is an apocalyptic number.

It is an amenable number.

159890356117 is a deficient number, since it is larger than the sum of its proper divisors (1).

159890356117 is an equidigital number, since it uses as much as digits as its factorization.

159890356117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2041200, while the sum is 55.

The spelling of 159890356117 in words is "one hundred fifty-nine billion, eight hundred ninety million, three hundred fifty-six thousand, one hundred seventeen".