159420449436 has 24 divisors (see below), whose sum is σ = 375815907600. Its totient is φ = 52592312832.

The previous prime is 159420449417. The next prime is 159420449437. The reversal of 159420449436 is 634944024951.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159420449437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68478411 + ... + 68480738.

It is an arithmetic number, because the mean of its divisors is an integer number (15658996150).

Almost surely, 2^159420449436 is an apocalyptic number.

It is an amenable number.

159420449436 is an abundant number, since it is smaller than the sum of its proper divisors (216395458164).

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

159420449436 is a wasteful number, since it uses less digits than its factorization.

159420449436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136959253 (or 136959251 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 51.

It can be divided in two parts, 159420 and 449436, that added together give a triangular number (608856 = T₁₁₀₃).

The spelling of 159420449436 in words is "one hundred fifty-nine billion, four hundred twenty million, four hundred forty-nine thousand, four hundred thirty-six".