171409248255 has 32 divisors (see below), whose sum is σ = 313514302464. Its totient is φ = 78338451456.

The previous prime is 171409248251. The next prime is 171409248287. The reversal of 171409248255 is 552842904171.

It is a Cunningham number, because it is equal to 414016²-1.

It is not a de Polignac number, because 171409248255 - 2² = 171409248251 is a prime.

It is a super-2 number, since 2×171409248255² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171409248251) 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, 207007 + ... + 621023.

It is an arithmetic number, because the mean of its divisors is an integer number (9797321952).

Almost surely, 2^171409248255 is an apocalyptic number.

171409248255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

171409248255 is a deficient number, since it is larger than the sum of its proper divisors (142105054209).

171409248255 is a wasteful number, since it uses less digits than its factorization.

171409248255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417975.

The product of its (nonzero) digits is 806400, while the sum is 48.

The spelling of 171409248255 in words is "one hundred seventy-one billion, four hundred nine million, two hundred forty-eight thousand, two hundred fifty-five".