159923216540 has 24 divisors (see below), whose sum is σ = 342175337280. Its totient is φ = 62762318528.

The previous prime is 159923216501. The next prime is 159923216569. The reversal of 159923216540 is 45612329951.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75434420 + ... + 75436539.

It is an arithmetic number, because the mean of its divisors is an integer number (14257305720).

Almost surely, 2^159923216540 is an apocalyptic number.

159923216540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159923216540 is an abundant number, since it is smaller than the sum of its proper divisors (182252120740).

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

159923216540 is a wasteful number, since it uses less digits than its factorization.

159923216540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150871021 (or 150871019 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 47.

The spelling of 159923216540 in words is "one hundred fifty-nine billion, nine hundred twenty-three million, two hundred sixteen thousand, five hundred forty".