11870206149 has 4 divisors (see below), whose sum is σ = 15826941536. Its totient is φ = 7913470764.

The previous prime is 11870206121. The next prime is 11870206151. The reversal of 11870206149 is 94160207811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94160207811 = 3 ⋅31386735937.

It is not a de Polignac number, because 11870206149 - 2⁹ = 11870205637 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 (11870206349) 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, 1978367689 + ... + 1978367694.

It is an arithmetic number, because the mean of its divisors is an integer number (3956735384).

Almost surely, 2^11870206149 is an apocalyptic number.

It is an amenable number.

11870206149 is a deficient number, since it is larger than the sum of its proper divisors (3956735387).

11870206149 is an equidigital number, since it uses as much as digits as its factorization.

11870206149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3956735386.

The product of its (nonzero) digits is 24192, while the sum is 39.

The spelling of 11870206149 in words is "eleven billion, eight hundred seventy million, two hundred six thousand, one hundred forty-nine".