178444851145 has 16 divisors (see below), whose sum is σ = 234707659200. Its totient is φ = 129163003200.

The previous prime is 178444851139. The next prime is 178444851157. The reversal of 178444851145 is 541158444871.

It is a de Polignac number, because none of the positive numbers 2^k-178444851145 is a prime.

It is a super-2 number, since 2×178444851145² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 178444851092 and 178444851101.

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 15 ways as a sum of consecutive naturals, for example, 7676670 + ... + 7699879.

It is an arithmetic number, because the mean of its divisors is an integer number (14669228700).

Almost surely, 2^178444851145 is an apocalyptic number.

It is an amenable number.

178444851145 is a deficient number, since it is larger than the sum of its proper divisors (56262808055).

178444851145 is a wasteful number, since it uses less digits than its factorization.

178444851145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15376776.

The product of its digits is 2867200, while the sum is 52.

The spelling of 178444851145 in words is "one hundred seventy-eight billion, four hundred forty-four million, eight hundred fifty-one thousand, one hundred forty-five".