159421811003 has 16 divisors (see below), whose sum is σ = 200215780800. Its totient is φ = 126135934848.

The previous prime is 159421810997. The next prime is 159421811039. The reversal of 159421811003 is 300118124951.

It is a happy number.

It is not a de Polignac number, because 159421811003 - 2²⁸ = 159153375547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (159421811053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17871950 + ... + 17880867.

It is an arithmetic number, because the mean of its divisors is an integer number (12513486300).

Almost surely, 2^159421811003 is an apocalyptic number.

159421811003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

159421811003 is a deficient number, since it is larger than the sum of its proper divisors (40793969797).

159421811003 is an equidigital number, since it uses as much as digits as its factorization.

159421811003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35752851 (or 35752837 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 35.

Adding to 159421811003 its reverse (300118124951), we get a palindrome (459539935954).

The spelling of 159421811003 in words is "one hundred fifty-nine billion, four hundred twenty-one million, eight hundred eleven thousand, three".