11867059871 has 4 divisors (see below), whose sum is σ = 11899395552. Its totient is φ = 11834724192.

The previous prime is 11867059859. The next prime is 11867059903. The reversal of 11867059871 is 17895076811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17895076811 = 43 ⋅416164577.

It is a cyclic number.

It is not a de Polignac number, because 11867059871 - 2¹⁸ = 11866797727 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 (11867059271) 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, 16167290 + ... + 16168023.

It is an arithmetic number, because the mean of its divisors is an integer number (2974848888).

Almost surely, 2^11867059871 is an apocalyptic number.

11867059871 is a deficient number, since it is larger than the sum of its proper divisors (32335681).

11867059871 is an equidigital number, since it uses as much as digits as its factorization.

11867059871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32335680.

The product of its (nonzero) digits is 846720, while the sum is 53.

The spelling of 11867059871 in words is "eleven billion, eight hundred sixty-seven million, fifty-nine thousand, eight hundred seventy-one".