15978241758241 has 32 divisors (see below), whose sum is σ = 19292058383360. Its totient is φ = 12927496781376.

The previous prime is 15978241758239. The next prime is 15978241758299. The reversal of 15978241758241 is 14285714287951.

It is a cyclic number.

It is not a de Polignac number, because 15978241758241 - 2¹ = 15978241758239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15978241738241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 436104775 + ... + 436141411.

It is an arithmetic number, because the mean of its divisors is an integer number (602876824480).

Almost surely, 2^{15978241758241} is an apocalyptic number.

It is an amenable number.

15978241758241 is a deficient number, since it is larger than the sum of its proper divisors (3313816625119).

15978241758241 is a wasteful number, since it uses less digits than its factorization.

15978241758241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48533.

The product of its digits is 45158400, while the sum is 64.

The spelling of 15978241758241 in words is "fifteen trillion, nine hundred seventy-eight billion, two hundred forty-one million, seven hundred fifty-eight thousand, two hundred forty-one".