171888311053 has 4 divisors (see below), whose sum is σ = 172495690528. Its totient is φ = 171280931580.

The previous prime is 171888311039. The next prime is 171888311131. The reversal of 171888311053 is 350113888171.

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 a de Polignac number, because none of the positive numbers 2^k-171888311053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 171888310994 and 171888311012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171888311003) 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, 303689313 + ... + 303689878.

It is an arithmetic number, because the mean of its divisors is an integer number (43123922632).

Almost surely, 2^171888311053 is an apocalyptic number.

It is an amenable number.

171888311053 is a deficient number, since it is larger than the sum of its proper divisors (607379475).

171888311053 is an equidigital number, since it uses as much as digits as its factorization.

171888311053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607379474.

The product of its (nonzero) digits is 161280, while the sum is 46.

The spelling of 171888311053 in words is "one hundred seventy-one billion, eight hundred eighty-eight million, three hundred eleven thousand, fifty-three".