165145756147 has 4 divisors (see below), whose sum is σ = 165151300696. Its totient is φ = 165140211600.

The previous prime is 165145756093. The next prime is 165145756151. The reversal of 165145756147 is 741657541561.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 165145756147 - 2⁷ = 165145756019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165145756094 and 165145756103.

It is not an unprimeable number, because it can be changed into a prime (165145706147) 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, 2727354 + ... + 2787247.

It is an arithmetic number, because the mean of its divisors is an integer number (41287825174).

Almost surely, 2^165145756147 is an apocalyptic number.

165145756147 is a deficient number, since it is larger than the sum of its proper divisors (5544549).

165145756147 is an equidigital number, since it uses as much as digits as its factorization.

165145756147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5544548.

The product of its digits is 3528000, while the sum is 52.

The spelling of 165145756147 in words is "one hundred sixty-five billion, one hundred forty-five million, seven hundred fifty-six thousand, one hundred forty-seven".