159121713456 has 120 divisors (see below), whose sum is σ = 469805310000. Its totient is φ = 50136662016.

The previous prime is 159121713451. The next prime is 159121713511. The reversal of 159121713456 is 654317121951.

159121713456 is a `hidden beast` number, since 1 + 5 + 9 + 121 + 71 + 3 + 456 = 666.

It is not an unprimeable number, because it can be changed into a prime (159121713451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1163700 + ... + 1293228.

It is an arithmetic number, because the mean of its divisors is an integer number (3915044250).

Almost surely, 2^159121713456 is an apocalyptic number.

159121713456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 159121713456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234902655000).

159121713456 is an abundant number, since it is smaller than the sum of its proper divisors (310683596544).

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

159121713456 is a wasteful number, since it uses less digits than its factorization.

159121713456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130011 (or 130002 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The spelling of 159121713456 in words is "one hundred fifty-nine billion, one hundred twenty-one million, seven hundred thirteen thousand, four hundred fifty-six".