208110416491 has 4 divisors (see below), whose sum is σ = 208123433712. Its totient is φ = 208097399272.

The previous prime is 208110416489. The next prime is 208110416537. The reversal of 208110416491 is 194614011802.

208110416491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 208110416491 - 2¹ = 208110416489 is a prime.

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 208110416491.

It is not an unprimeable number, because it can be changed into a prime (208110416411) 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 3 ways as a sum of consecutive naturals, for example, 6484600 + ... + 6516613.

It is an arithmetic number, because the mean of its divisors is an integer number (52030858428).

Almost surely, 2^208110416491 is an apocalyptic number.

208110416491 is a deficient number, since it is larger than the sum of its proper divisors (13017221).

208110416491 is a wasteful number, since it uses less digits than its factorization.

208110416491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13017220.

The product of its (nonzero) digits is 13824, while the sum is 37.

The spelling of 208110416491 in words is "two hundred eight billion, one hundred ten million, four hundred sixteen thousand, four hundred ninety-one".