170020378136 has 16 divisors (see below), whose sum is σ = 364329381840. Its totient is φ = 72865876320.

The previous prime is 170020378133. The next prime is 170020378159. The reversal of 170020378136 is 631873020071.

It is a self number, because there is not a number n which added to its sum of digits gives 170020378136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170020378133) 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, 1518039035 + ... + 1518039146.

It is an arithmetic number, because the mean of its divisors is an integer number (22770586365).

Almost surely, 2^170020378136 is an apocalyptic number.

It is an amenable number.

170020378136 is an abundant number, since it is smaller than the sum of its proper divisors (194309003704).

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

170020378136 is a wasteful number, since it uses less digits than its factorization.

170020378136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3036078194 (or 3036078190 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The spelling of 170020378136 in words is "one hundred seventy billion, twenty million, three hundred seventy-eight thousand, one hundred thirty-six".