170745375420 has 72 divisors (see below), whose sum is σ = 518463769824. Its totient is φ = 45484967808.

The previous prime is 170745375401. The next prime is 170745375431. The reversal of 170745375420 is 24573547071.

170745375420 is a `hidden beast` number, since 1 + 7 + 0 + 74 + 5 + 37 + 542 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 316419 + ... + 664538.

It is an arithmetic number, because the mean of its divisors is an integer number (7200885692).

Almost surely, 2^170745375420 is an apocalyptic number.

170745375420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

170745375420 is an abundant number, since it is smaller than the sum of its proper divisors (347718394404).

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

170745375420 is a wasteful number, since it uses less digits than its factorization.

170745375420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981939 (or 981934 counting only the distinct ones).

The product of its (nonzero) digits is 823200, while the sum is 45.

The spelling of 170745375420 in words is "one hundred seventy billion, seven hundred forty-five million, three hundred seventy-five thousand, four hundred twenty".