171455000047 has 2 divisors, whose sum is σ = 171455000048. Its totient is φ = 171455000046.

The previous prime is 171455000039. The next prime is 171455000141. The reversal of 171455000047 is 740000554171.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 171455000047 - 2³ = 171455000039 is a prime.

It is a super-2 number, since 2×171455000047² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 171454999976 and 171455000021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171455300047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85727500023 + 85727500024.

It is an arithmetic number, because the mean of its divisors is an integer number (85727500024).

Almost surely, 2^171455000047 is an apocalyptic number.

171455000047 is a deficient number, since it is larger than the sum of its proper divisors (1).

171455000047 is an equidigital number, since it uses as much as digits as its factorization.

171455000047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19600, while the sum is 34.

The spelling of 171455000047 in words is "one hundred seventy-one billion, four hundred fifty-five million, forty-seven", and thus it is an aban number.