12764408747 has 4 divisors (see below), whose sum is σ = 12907829160. Its totient is φ = 12620988336.

The previous prime is 12764408743. The next prime is 12764408803. The reversal of 12764408747 is 74780446721.

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

It is a cyclic number.

It is not a de Polignac number, because 12764408747 - 2² = 12764408743 is a prime.

It is a super-2 number, since 2×12764408747² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12764408695 and 12764408704.

It is not an unprimeable number, because it can be changed into a prime (12764408743) 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, 71710073 + ... + 71710250.

It is an arithmetic number, because the mean of its divisors is an integer number (3226957290).

Almost surely, 2^12764408747 is an apocalyptic number.

12764408747 is a deficient number, since it is larger than the sum of its proper divisors (143420413).

12764408747 is an equidigital number, since it uses as much as digits as its factorization.

12764408747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143420412.

The product of its (nonzero) digits is 2107392, while the sum is 50.

The spelling of 12764408747 in words is "twelve billion, seven hundred sixty-four million, four hundred eight thousand, seven hundred forty-seven".