12779307465 has 8 divisors (see below), whose sum is σ = 20446891968. Its totient is φ = 6815630640.

The previous prime is 12779307407. The next prime is 12779307467. The reversal of 12779307465 is 56470397721.

It is a happy number.

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

It is not a de Polignac number, because 12779307465 - 2⁸ = 12779307209 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12779307467) 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, 425976901 + ... + 425976930.

It is an arithmetic number, because the mean of its divisors is an integer number (2555861496).

Almost surely, 2^12779307465 is an apocalyptic number.

12779307465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12779307465 is a deficient number, since it is larger than the sum of its proper divisors (7667584503).

12779307465 is an equidigital number, since it uses as much as digits as its factorization.

12779307465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851953839.

The product of its (nonzero) digits is 2222640, while the sum is 51.

The spelling of 12779307465 in words is "twelve billion, seven hundred seventy-nine million, three hundred seven thousand, four hundred sixty-five".