159678529920 has 1152 divisors, whose sum is σ = 703443424320. Its totient is φ = 32500776960.

The previous prime is 159678529919. The next prime is 159678529943. The reversal of 159678529920 is 29925876951.

159678529920 is a `hidden beast` number, since 15 + 9 + 6 + 7 + 8 + 529 + 92 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1152).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 503717602 + ... + 503717918.

Almost surely, 2^159678529920 is an apocalyptic number.

159678529920 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 159678529920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351721712160).

159678529920 is an abundant number, since it is smaller than the sum of its proper divisors (543764894400).

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

159678529920 is a wasteful number, since it uses less digits than its factorization.

159678529920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 24494400, while the sum is 63.

The spelling of 159678529920 in words is "one hundred fifty-nine billion, six hundred seventy-eight million, five hundred twenty-nine thousand, nine hundred twenty".