12361649867 has 8 divisors (see below), whose sum is σ = 14148597216. Its totient is φ = 10579951872.

The previous prime is 12361649849. The next prime is 12361649891. The reversal of 12361649867 is 76894616321.

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

It is not a de Polignac number, because 12361649867 - 2¹² = 12361645771 is a prime.

It is a super-2 number, since 2×12361649867² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12361649827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1307288 + ... + 1316709.

It is an arithmetic number, because the mean of its divisors is an integer number (1768574652).

Almost surely, 2^12361649867 is an apocalyptic number.

12361649867 is a deficient number, since it is larger than the sum of its proper divisors (1786947349).

12361649867 is an equidigital number, since it uses as much as digits as its factorization.

12361649867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2624677.

The product of its digits is 2612736, while the sum is 53.

The spelling of 12361649867 in words is "twelve billion, three hundred sixty-one million, six hundred forty-nine thousand, eight hundred sixty-seven".