165140128442 has 16 divisors (see below), whose sum is σ = 253006286400. Its totient is φ = 80821433280.

The previous prime is 165140128411. The next prime is 165140128459. The reversal of 165140128442 is 244821041561.

It is a junction number, because it is equal to n+sod(n) for n = 165140128396 and 165140128405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4163567 + ... + 4203042.

It is an arithmetic number, because the mean of its divisors is an integer number (15812892900).

Almost surely, 2^165140128442 is an apocalyptic number.

165140128442 is a deficient number, since it is larger than the sum of its proper divisors (87866157958).

165140128442 is a wasteful number, since it uses less digits than its factorization.

165140128442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8366821.

The product of its (nonzero) digits is 61440, while the sum is 38.

The spelling of 165140128442 in words is "one hundred sixty-five billion, one hundred forty million, one hundred twenty-eight thousand, four hundred forty-two".