171157688886474 has 128 divisors (see below), whose sum is σ = 398503012239360. Its totient is φ = 54349907040000.

The previous prime is 171157688886469. The next prime is 171157688886557. The reversal of 171157688886474 is 474688886751171.

171157688886474 is a `hidden beast` number, since 1 + 7 + 1 + 1 + 5 + 7 + 68 + 8 + 8 + 86 + 474 = 666.

171157688886474 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 171157688886393 and 171157688886402.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6290004729 + ... + 6290031939.

It is an arithmetic number, because the mean of its divisors is an integer number (3113304783120).

Almost surely, 2^{171157688886474} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 171157688886474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199251506119680).

171157688886474 is an abundant number, since it is smaller than the sum of its proper divisors (227345323352886).

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

171157688886474 is a wasteful number, since it uses less digits than its factorization.

171157688886474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47673 (or 47667 counting only the distinct ones).

The product of its digits is 4046192640, while the sum is 81.

The spelling of 171157688886474 in words is "one hundred seventy-one trillion, one hundred fifty-seven billion, six hundred eighty-eight million, eight hundred eighty-six thousand, four hundred seventy-four".