165378873495 has 32 divisors (see below), whose sum is σ = 288896154624. Its totient is φ = 80118460800.

The previous prime is 165378873487. The next prime is 165378873551. The reversal of 165378873495 is 594378873561.

It is not a de Polignac number, because 165378873495 - 2³ = 165378873487 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203992 + ... + 610221.

It is an arithmetic number, because the mean of its divisors is an integer number (9028004832).

Almost surely, 2^165378873495 is an apocalyptic number.

165378873495 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165378873495 is a deficient number, since it is larger than the sum of its proper divisors (123517281129).

165378873495 is a wasteful number, since it uses less digits than its factorization.

165378873495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815463.

The product of its digits is 152409600, while the sum is 66.

Adding to 165378873495 its sum of digits (66), we get a palindrome (165378873561).

The spelling of 165378873495 in words is "one hundred sixty-five billion, three hundred seventy-eight million, eight hundred seventy-three thousand, four hundred ninety-five".