159498247981 has 8 divisors (see below), whose sum is σ = 159728077080. Its totient is φ = 159268587072.

The previous prime is 159498247957. The next prime is 159498248003. The reversal of 159498247981 is 189742894951.

159498247981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 12145142025 + 147353105956 = 110205^2 + 383866^2 .

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 159498247981 - 2⁵ = 159498247949 is a prime.

It is a super-2 number, since 2×159498247981² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159498247681) 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, 1921371 + ... + 2002663.

It is an arithmetic number, because the mean of its divisors is an integer number (19966009635).

Almost surely, 2^159498247981 is an apocalyptic number.

It is an amenable number.

159498247981 is a deficient number, since it is larger than the sum of its proper divisors (229829099).

159498247981 is a wasteful number, since it uses less digits than its factorization.

159498247981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84095.

The product of its digits is 52254720, while the sum is 67.

The spelling of 159498247981 in words is "one hundred fifty-nine billion, four hundred ninety-eight million, two hundred forty-seven thousand, nine hundred eighty-one".