159271243974 has 108 divisors (see below), whose sum is σ = 367257136428. Its totient is φ = 51732581040.

The previous prime is 159271243933. The next prime is 159271243981. The reversal of 159271243974 is 479342172951.

159271243974 is a `hidden beast` number, since 1 + 592 + 7 + 1 + 2 + 43 + 9 + 7 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (3810240) is a multiple of the sum of its prime factors (945).

It is a self number, because there is not a number n which added to its sum of digits gives 159271243974.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 378316284 + ... + 378316704.

It is an arithmetic number, because the mean of its divisors is an integer number (3400529041).

Almost surely, 2^159271243974 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 159271243974, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183628568214).

159271243974 is an abundant number, since it is smaller than the sum of its proper divisors (207985892454).

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

159271243974 is an frugal number, since it uses more digits than its factorization.

159271243974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945 (or 469 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

Multiplying 159271243974 by its sum of digits (54), we get a square (8600647174596 = 2932686²).

159271243974 divided by its sum of digits (54) gives a square (2949467481 = 54309²).

The spelling of 159271243974 in words is "one hundred fifty-nine billion, two hundred seventy-one million, two hundred forty-three thousand, nine hundred seventy-four".