20157115726163 has 16 divisors (see below), whose sum is σ = 22146572448000. Its totient is φ = 18232388424480.

The previous prime is 20157115726087. The next prime is 20157115726177. The reversal of 20157115726163 is 36162751175102.

It is a cyclic number.

It is not a de Polignac number, because 20157115726163 - 2¹⁰ = 20157115725139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20157114726163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42013013 + ... + 42490086.

It is an arithmetic number, because the mean of its divisors is an integer number (1384160778000).

Almost surely, 2^{20157115726163} is an apocalyptic number.

20157115726163 is a deficient number, since it is larger than the sum of its proper divisors (1989456721837).

20157115726163 is a wasteful number, since it uses less digits than its factorization.

20157115726163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84503482.

The product of its (nonzero) digits is 529200, while the sum is 47.

The spelling of 20157115726163 in words is "twenty trillion, one hundred fifty-seven billion, one hundred fifteen million, seven hundred twenty-six thousand, one hundred sixty-three".