7478631018893 has 2 divisors, whose sum is σ = 7478631018894. Its totient is φ = 7478631018892.

The previous prime is 7478631018877. The next prime is 7478631018899. The reversal of 7478631018893 is 3988101368747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6856657464484 + 621973554409 = 2618522^2 + 788653^2 .

It is a cyclic number.

It is not a de Polignac number, because 7478631018893 - 2⁴ = 7478631018877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7478631018899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3739315509446 + 3739315509447.

It is an arithmetic number, because the mean of its divisors is an integer number (3739315509447).

Almost surely, 2^{7478631018893} is an apocalyptic number.

It is an amenable number.

7478631018893 is a deficient number, since it is larger than the sum of its proper divisors (1).

7478631018893 is an equidigital number, since it uses as much as digits as its factorization.

7478631018893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48771072, while the sum is 65.

The spelling of 7478631018893 in words is "seven trillion, four hundred seventy-eight billion, six hundred thirty-one million, eighteen thousand, eight hundred ninety-three".