159720343753 has 4 divisors (see below), whose sum is σ = 161644685328. Its totient is φ = 157796002180.

The previous prime is 159720343721. The next prime is 159720343799. The reversal of 159720343753 is 357343027951.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 159720343753 - 2⁵ = 159720343721 is a prime.

It is a super-2 number, since 2×159720343753² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 159720343697 and 159720343706.

It is not an unprimeable number, because it can be changed into a prime (159720347753) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 962170663 + ... + 962170828.

It is an arithmetic number, because the mean of its divisors is an integer number (40411171332).

Almost surely, 2^159720343753 is an apocalyptic number.

It is an amenable number.

159720343753 is a deficient number, since it is larger than the sum of its proper divisors (1924341575).

159720343753 is an equidigital number, since it uses as much as digits as its factorization.

159720343753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924341574.

The product of its (nonzero) digits is 2381400, while the sum is 49.

The spelling of 159720343753 in words is "one hundred fifty-nine billion, seven hundred twenty million, three hundred forty-three thousand, seven hundred fifty-three".