12767454622438 has 4 divisors (see below), whose sum is σ = 19151181933660. Its totient is φ = 6383727311218.

The previous prime is 12767454622379. The next prime is 12767454622487. The reversal of 12767454622438 is 83422645476721.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3191863655608 + ... + 3191863655611.

It is an arithmetic number, because the mean of its divisors is an integer number (4787795483415).

Almost surely, 2^{12767454622438} is an apocalyptic number.

12767454622438 is a deficient number, since it is larger than the sum of its proper divisors (6383727311222).

12767454622438 is an equidigital number, since it uses as much as digits as its factorization.

12767454622438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6383727311221.

The product of its digits is 108380160, while the sum is 61.

The spelling of 12767454622438 in words is "twelve trillion, seven hundred sixty-seven billion, four hundred fifty-four million, six hundred twenty-two thousand, four hundred thirty-eight".