12215917345 has 8 divisors (see below), whose sum is σ = 14970996864. Its totient is φ = 9564803184.

The previous prime is 12215917339. The next prime is 12215917367. The reversal of 12215917345 is 54371951221.

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

It is a cyclic number.

It is not a de Polignac number, because 12215917345 - 2⁵ = 12215917313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12215917298 and 12215917307.

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, 25991079 + ... + 25991548.

It is an arithmetic number, because the mean of its divisors is an integer number (1871374608).

Almost surely, 2^12215917345 is an apocalyptic number.

It is an amenable number.

12215917345 is a deficient number, since it is larger than the sum of its proper divisors (2755079519).

12215917345 is an equidigital number, since it uses as much as digits as its factorization.

12215917345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51982679.

The product of its digits is 75600, while the sum is 40.

The spelling of 12215917345 in words is "twelve billion, two hundred fifteen million, nine hundred seventeen thousand, three hundred forty-five".