159870393440 has 24 divisors (see below), whose sum is σ = 377693804880. Its totient is φ = 63948157312.

The previous prime is 159870393409. The next prime is 159870393457. The reversal of 159870393440 is 44393078951.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499594820 + ... + 499595139.

It is an arithmetic number, because the mean of its divisors is an integer number (15737241870).

Almost surely, 2^159870393440 is an apocalyptic number.

159870393440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159870393440 is an abundant number, since it is smaller than the sum of its proper divisors (217823411440).

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

159870393440 is an equidigital number, since it uses as much as digits as its factorization.

159870393440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999189974 (or 999189966 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 159870393440 in words is "one hundred fifty-nine billion, eight hundred seventy million, three hundred ninety-three thousand, four hundred forty".