12905650379 has 4 divisors (see below), whose sum is σ = 13117218480. Its totient is φ = 12694082280.

The previous prime is 12905650369. The next prime is 12905650403. The reversal of 12905650379 is 97305650921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97305650921 = 911 ⋅106811911.

It is a cyclic number.

It is not a de Polignac number, because 12905650379 - 2²⁴ = 12888873163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12905650309) 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, 105783959 + ... + 105784080.

It is an arithmetic number, because the mean of its divisors is an integer number (3279304620).

Almost surely, 2^12905650379 is an apocalyptic number.

12905650379 is a deficient number, since it is larger than the sum of its proper divisors (211568101).

12905650379 is an equidigital number, since it uses as much as digits as its factorization.

12905650379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211568100.

The product of its (nonzero) digits is 510300, while the sum is 47.

The spelling of 12905650379 in words is "twelve billion, nine hundred five million, six hundred fifty thousand, three hundred seventy-nine".