170020631240 has 32 divisors (see below), whose sum is σ = 384188271480. Its totient is φ = 67716367872.

The previous prime is 170020631237. The next prime is 170020631269. The reversal of 170020631240 is 42136020071.

It can be written as a sum of positive squares in 4 ways, for example, as 155288012356 + 14732618884 = 394066^2 + 121378^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9111959 + ... + 9130598.

Almost surely, 2^170020631240 is an apocalyptic number.

170020631240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

170020631240 is an abundant number, since it is smaller than the sum of its proper divisors (214167640240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

170020631240 is a wasteful number, since it uses less digits than its factorization.

170020631240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18242801 (or 18242797 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The spelling of 170020631240 in words is "one hundred seventy billion, twenty million, six hundred thirty-one thousand, two hundred forty".