208479148669 has 16 divisors (see below), whose sum is σ = 235452853440. Its totient is φ = 182852208000.

The previous prime is 208479148639. The next prime is 208479148693. The reversal of 208479148669 is 966841974802.

208479148669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 208479148669 - 2⁷ = 208479148541 is a prime.

It is a super-2 number, since 2×208479148669² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 208479148669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208479148639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174034 + ... + 668764.

It is an arithmetic number, because the mean of its divisors is an integer number (14715803340).

Almost surely, 2^208479148669 is an apocalyptic number.

208479148669 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

208479148669 is a deficient number, since it is larger than the sum of its proper divisors (26973704771).

208479148669 is a wasteful number, since it uses less digits than its factorization.

208479148669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496092.

The product of its (nonzero) digits is 41803776, while the sum is 64.

The spelling of 208479148669 in words is "two hundred eight billion, four hundred seventy-nine million, one hundred forty-eight thousand, six hundred sixty-nine".