Search a number
-
+
144418007663 = 167864778489
BaseRepresentation
bin1000011001111111111…
…0111110101001101111
3111210202201221220220122
42012133332332221233
54331232002221123
6150202243035155
713301545545056
oct2063776765157
9453681856818
10144418007663
115627a222746
1223ba536babb
1310806c8b607
146dc02b339d
153b53a15bc8
hex219ffbea6f

144418007663 has 4 divisors (see below), whose sum is σ = 145282786320. Its totient is φ = 143553229008.

The previous prime is 144418007651. The next prime is 144418007677. The reversal of 144418007663 is 366700814441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366700814441 = 1328207754957.

It is a cyclic number.

It is not a de Polignac number, because 144418007663 - 26 = 144418007599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144418007633) 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, 432389078 + ... + 432389411.

It is an arithmetic number, because the mean of its divisors is an integer number (36320696580).

Almost surely, 2144418007663 is an apocalyptic number.

144418007663 is a deficient number, since it is larger than the sum of its proper divisors (864778657).

144418007663 is an equidigital number, since it uses as much as digits as its factorization.

144418007663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864778656.

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 144418007663 in words is "one hundred forty-four billion, four hundred eighteen million, seven thousand, six hundred sixty-three".

Divisors: 1 167 864778489 144418007663