159994910538 has 24 divisors (see below), whose sum is σ = 350021232288. Its totient is φ = 52813853352.

The previous prime is 159994910533. The next prime is 159994910563. The reversal of 159994910538 is 835019499951.

159994910538 is a `hidden beast` number, since 1 + 5 + 9 + 9 + 9 + 4 + 91 + 0 + 538 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (159994910533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43146720 + ... + 43150427.

It is an arithmetic number, because the mean of its divisors is an integer number (14584218012).

Almost surely, 2^159994910538 is an apocalyptic number.

159994910538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

159994910538 is an abundant number, since it is smaller than the sum of its proper divisors (190026321750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

159994910538 is a wasteful number, since it uses less digits than its factorization.

159994910538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86297258 (or 86297255 counting only the distinct ones).

The product of its (nonzero) digits is 15746400, while the sum is 63.

The spelling of 159994910538 in words is "one hundred fifty-nine billion, nine hundred ninety-four million, nine hundred ten thousand, five hundred thirty-eight".