12415617867 has 4 divisors (see below), whose sum is σ = 16554157160. Its totient is φ = 8277078576.

The previous prime is 12415617793. The next prime is 12415617883. The reversal of 12415617867 is 76871651421.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12415617867 - 2¹¹ = 12415615819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12415615867) 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, 2069269642 + ... + 2069269647.

It is an arithmetic number, because the mean of its divisors is an integer number (4138539290).

Almost surely, 2^12415617867 is an apocalyptic number.

12415617867 is a deficient number, since it is larger than the sum of its proper divisors (4138539293).

12415617867 is an equidigital number, since it uses as much as digits as its factorization.

12415617867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4138539292.

The product of its digits is 564480, while the sum is 48.

The spelling of 12415617867 in words is "twelve billion, four hundred fifteen million, six hundred seventeen thousand, eight hundred sixty-seven".