11685377109 has 16 divisors (see below), whose sum is σ = 17852792832. Its totient is φ = 6659919408.

The previous prime is 11685377087. The next prime is 11685377113. The reversal of 11685377109 is 90177358611.

It is not a de Polignac number, because 11685377109 - 2¹⁷ = 11685246037 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11685357109) 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, 718389 + ... + 734474.

It is an arithmetic number, because the mean of its divisors is an integer number (1115799552).

Almost surely, 2^11685377109 is an apocalyptic number.

It is an amenable number.

11685377109 is a deficient number, since it is larger than the sum of its proper divisors (6167415723).

11685377109 is a wasteful number, since it uses less digits than its factorization.

11685377109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453256.

The product of its (nonzero) digits is 317520, while the sum is 48.

The spelling of 11685377109 in words is "eleven billion, six hundred eighty-five million, three hundred seventy-seven thousand, one hundred nine".