159643975680 has 900 divisors, whose sum is σ = 667134285048. Its totient is φ = 36415733760.

The previous prime is 159643975663. The next prime is 159643975681. The reversal of 159643975680 is 86579346951.

159643975680 is a `hidden beast` number, since 1 + 5 + 9 + 64 + 3 + 9 + 7 + 568 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159643975681) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 325140235 + ... + 325140725.

Almost surely, 2^159643975680 is an apocalyptic number.

159643975680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 159643975680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333567142524).

159643975680 is an abundant number, since it is smaller than the sum of its proper divisors (507490309368).

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

159643975680 is an frugal number, since it uses more digits than its factorization.

159643975680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 508 counting only the distinct ones).

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

The spelling of 159643975680 in words is "one hundred fifty-nine billion, six hundred forty-three million, nine hundred seventy-five thousand, six hundred eighty".