12154867685 has 8 divisors (see below), whose sum is σ = 14642597016. Its totient is φ = 9686056960.

The previous prime is 12154867679. The next prime is 12154867733. The reversal of 12154867685 is 58676845121.

It can be written as a sum of positive squares in 4 ways, for example, as 6458693956 + 5696173729 = 80366^2 + 75473^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-12154867685 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4728236 + ... + 4730805.

It is an arithmetic number, because the mean of its divisors is an integer number (1830324627).

Almost surely, 2^12154867685 is an apocalyptic number.

It is an amenable number.

12154867685 is a deficient number, since it is larger than the sum of its proper divisors (2487729331).

12154867685 is an equidigital number, since it uses as much as digits as its factorization.

12154867685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9459303.

The product of its digits is 3225600, while the sum is 53.

The spelling of 12154867685 in words is "twelve billion, one hundred fifty-four million, eight hundred sixty-seven thousand, six hundred eighty-five".