7478631018851 has 2 divisors, whose sum is σ = 7478631018852. Its totient is φ = 7478631018850.

The previous prime is 7478631018797. The next prime is 7478631018863. The reversal of 7478631018851 is 1588101368747.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7478631018851 - 2²⁶ = 7478563909987 is a prime.

It is a super-2 number, since 2×7478631018851² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7478631018751) 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, 3739315509425 + 3739315509426.

It is an arithmetic number, because the mean of its divisors is an integer number (3739315509426).

Almost surely, 2^{7478631018851} is an apocalyptic number.

7478631018851 is a deficient number, since it is larger than the sum of its proper divisors (1).

7478631018851 is an equidigital number, since it uses as much as digits as its factorization.

7478631018851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9031680, while the sum is 59.

The spelling of 7478631018851 in words is "seven trillion, four hundred seventy-eight billion, six hundred thirty-one million, eighteen thousand, eight hundred fifty-one".