165420827138 has 8 divisors (see below), whose sum is σ = 283578560832. Its totient is φ = 70894640196.

The previous prime is 165420827129. The next prime is 165420827177. The reversal of 165420827138 is 831728024561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 165420827092 and 165420827101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5907886670 + ... + 5907886697.

It is an arithmetic number, because the mean of its divisors is an integer number (35447320104).

Almost surely, 2^165420827138 is an apocalyptic number.

165420827138 is a deficient number, since it is larger than the sum of its proper divisors (118157733694).

165420827138 is a wasteful number, since it uses less digits than its factorization.

165420827138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11815773376.

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 165420827138 in words is "one hundred sixty-five billion, four hundred twenty million, eight hundred twenty-seven thousand, one hundred thirty-eight".