1264192678943 has 2 divisors, whose sum is σ = 1264192678944. Its totient is φ = 1264192678942.

The previous prime is 1264192678891. The next prime is 1264192679039. The reversal of 1264192678943 is 3498762914621.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1264192678943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1264192671943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632096339471 + 632096339472.

It is an arithmetic number, because the mean of its divisors is an integer number (632096339472).

Almost surely, 2^{1264192678943} is an apocalyptic number.

1264192678943 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264192678943 is an equidigital number, since it uses as much as digits as its factorization.

1264192678943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31352832, while the sum is 62.

The spelling of 1264192678943 in words is "one trillion, two hundred sixty-four billion, one hundred ninety-two million, six hundred seventy-eight thousand, nine hundred forty-three".