208671767131 has 16 divisors (see below), whose sum is σ = 210953852928. Its totient is φ = 206403976800.

The previous prime is 208671767119. The next prime is 208671767141. The reversal of 208671767131 is 131767176802.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-208671767131 is a prime.

It is a super-2 number, since 2×208671767131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208671767141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65971156 + ... + 65974318.

It is an arithmetic number, because the mean of its divisors is an integer number (13184615808).

Almost surely, 2^208671767131 is an apocalyptic number.

208671767131 is a deficient number, since it is larger than the sum of its proper divisors (2282085797).

208671767131 is a wasteful number, since it uses less digits than its factorization.

208671767131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5202.

The product of its (nonzero) digits is 592704, while the sum is 49.

The spelling of 208671767131 in words is "two hundred eight billion, six hundred seventy-one million, seven hundred sixty-seven thousand, one hundred thirty-one".