159121713455 has 16 divisors (see below), whose sum is σ = 191217678240. Its totient is φ = 127116404352.

The previous prime is 159121713451. The next prime is 159121713511. The reversal of 159121713455 is 554317121951.

It is a cyclic number.

It is not a de Polignac number, because 159121713455 - 2² = 159121713451 is a prime.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15493232 + ... + 15503498.

It is an arithmetic number, because the mean of its divisors is an integer number (11951104890).

Almost surely, 2^159121713455 is an apocalyptic number.

159121713455 is a deficient number, since it is larger than the sum of its proper divisors (32095964785).

159121713455 is a wasteful number, since it uses less digits than its factorization.

159121713455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14378.

The product of its digits is 189000, while the sum is 44.

The spelling of 159121713455 in words is "one hundred fifty-nine billion, one hundred twenty-one million, seven hundred thirteen thousand, four hundred fifty-five".