170203558427 has 16 divisors (see below), whose sum is σ = 199782063360. Its totient is φ = 141966209952.

The previous prime is 170203558379. The next prime is 170203558451. The reversal of 170203558427 is 724855302071.

It is not a de Polignac number, because 170203558427 - 2⁶ = 170203558363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (170203558487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 970073 + ... + 1132010.

It is an arithmetic number, because the mean of its divisors is an integer number (12486378960).

Almost surely, 2^170203558427 is an apocalyptic number.

170203558427 is a deficient number, since it is larger than the sum of its proper divisors (29578504933).

170203558427 is a wasteful number, since it uses less digits than its factorization.

170203558427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102402.

The product of its (nonzero) digits is 470400, while the sum is 44.

The spelling of 170203558427 in words is "one hundred seventy billion, two hundred three million, five hundred fifty-eight thousand, four hundred twenty-seven".