171179132639 has 2 divisors, whose sum is σ = 171179132640. Its totient is φ = 171179132638.

The previous prime is 171179132633. The next prime is 171179132647. The reversal of 171179132639 is 936231971171.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171179132639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171179132633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85589566319 + 85589566320.

It is an arithmetic number, because the mean of its divisors is an integer number (85589566320).

Almost surely, 2^171179132639 is an apocalyptic number.

171179132639 is a deficient number, since it is larger than the sum of its proper divisors (1).

171179132639 is an equidigital number, since it uses as much as digits as its factorization.

171179132639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 428652, while the sum is 50.

The spelling of 171179132639 in words is "one hundred seventy-one billion, one hundred seventy-nine million, one hundred thirty-two thousand, six hundred thirty-nine".