12651340346 has 4 divisors (see below), whose sum is σ = 18977010522. Its totient is φ = 6325670172.

The previous prime is 12651340319. The next prime is 12651340411. The reversal of 12651340346 is 64304315621.

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

It can be written as a sum of positive squares in only one way, i.e., 12351877321 + 299463025 = 111139^2 + 17305^2 .

It is a super-3 number, since 3×12651340346³ (a number of 31 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3162835085 + ... + 3162835088.

Almost surely, 2^12651340346 is an apocalyptic number.

12651340346 is a deficient number, since it is larger than the sum of its proper divisors (6325670176).

12651340346 is an equidigital number, since it uses as much as digits as its factorization.

12651340346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6325670175.

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 12651340346 its reverse (64304315621), we get a palindrome (76955655967).

The spelling of 12651340346 in words is "twelve billion, six hundred fifty-one million, three hundred forty thousand, three hundred forty-six".