171555553011 has 8 divisors (see below), whose sum is σ = 228745613520. Its totient is φ = 114367930592.

The previous prime is 171555552997. The next prime is 171555553067. The reversal of 171555553011 is 110355555171.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 171555553011 - 2⁹ = 171555552499 is a prime.

It is a super-2 number, since 2×171555553011² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (171555553111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438480 + ... + 731693.

It is an arithmetic number, because the mean of its divisors is an integer number (28593201690).

Almost surely, 2^171555553011 is an apocalyptic number.

171555553011 is a deficient number, since it is larger than the sum of its proper divisors (57190060509).

171555553011 is a wasteful number, since it uses less digits than its factorization.

171555553011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219045.

The product of its (nonzero) digits is 65625, while the sum is 39.

The spelling of 171555553011 in words is "one hundred seventy-one billion, five hundred fifty-five million, five hundred fifty-three thousand, eleven".