171406144553 has 4 divisors (see below), whose sum is σ = 195892736640. Its totient is φ = 146919552468.

The previous prime is 171406144543. The next prime is 171406144571. The reversal of 171406144553 is 355441604171.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 171406144553 - 2⁸ = 171406144297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 171406144553.

It is not an unprimeable number, because it can be changed into a prime (171406144543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12243296033 + ... + 12243296046.

It is an arithmetic number, because the mean of its divisors is an integer number (48973184160).

Almost surely, 2^171406144553 is an apocalyptic number.

It is an amenable number.

171406144553 is a deficient number, since it is larger than the sum of its proper divisors (24486592087).

171406144553 is an equidigital number, since it uses as much as digits as its factorization.

171406144553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24486592086.

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 171406144553 in words is "one hundred seventy-one billion, four hundred six million, one hundred forty-four thousand, five hundred fifty-three".