159459794640 has 200 divisors, whose sum is σ = 586405983240. Its totient is φ = 40021254144.

The previous prime is 159459794609. The next prime is 159459794647. The reversal of 159459794640 is 46497954951.

159459794640 is a `hidden beast` number, since 1 + 59 + 4 + 59 + 79 + 464 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 33616489104 + 125843305536 = 183348^2 + 354744^2 .

It is a super-2 number, since 2×159459794640² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159459794647) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 613605 + ... + 833924.

Almost surely, 2^159459794640 is an apocalyptic number.

159459794640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159459794640 is an abundant number, since it is smaller than the sum of its proper divisors (426946188600).

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

159459794640 is a wasteful number, since it uses less digits than its factorization.

159459794640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447571 (or 1447556 counting only the distinct ones).

The product of its (nonzero) digits is 48988800, while the sum is 63.

The spelling of 159459794640 in words is "one hundred fifty-nine billion, four hundred fifty-nine million, seven hundred ninety-four thousand, six hundred forty".