171115915641 has 48 divisors (see below), whose sum is σ = 251777477952. Its totient is φ = 103295779840.

The previous prime is 171115915639. The next prime is 171115915669. The reversal of 171115915641 is 146519511171.

It is not a de Polignac number, because 171115915641 - 2¹ = 171115915639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 171115915593 and 171115915602.

It is not an unprimeable number, because it can be changed into a prime (171115965641) 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 47 ways as a sum of consecutive naturals, for example, 175143745 + ... + 175144721.

It is an arithmetic number, because the mean of its divisors is an integer number (5245364124).

Almost surely, 2^171115915641 is an apocalyptic number.

171115915641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

171115915641 is a deficient number, since it is larger than the sum of its proper divisors (80661562311).

171115915641 is a wasteful number, since it uses less digits than its factorization.

171115915641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2422 (or 2411 counting only the distinct ones).

The product of its digits is 37800, while the sum is 42.

The spelling of 171115915641 in words is "one hundred seventy-one billion, one hundred fifteen million, nine hundred fifteen thousand, six hundred forty-one".