7981051254851 has 2 divisors, whose sum is σ = 7981051254852. Its totient is φ = 7981051254850.

The previous prime is 7981051254797. The next prime is 7981051254863. The reversal of 7981051254851 is 1584521501897.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1584521501897) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7981051254851 is a prime.

It is not a weakly prime, because it can be changed into another prime (7981051254881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3990525627425 + 3990525627426.

It is an arithmetic number, because the mean of its divisors is an integer number (3990525627426).

Almost surely, 2^{7981051254851} is an apocalyptic number.

7981051254851 is a deficient number, since it is larger than the sum of its proper divisors (1).

7981051254851 is an equidigital number, since it uses as much as digits as its factorization.

7981051254851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032000, while the sum is 56.

The spelling of 7981051254851 in words is "seven trillion, nine hundred eighty-one billion, fifty-one million, two hundred fifty-four thousand, eight hundred fifty-one".