5102519010781 has 2 divisors, whose sum is σ = 5102519010782. Its totient is φ = 5102519010780.

The previous prime is 5102519010769. The next prime is 5102519010791. The reversal of 5102519010781 is 1870109152015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5045261699556 + 57257311225 = 2246166^2 + 239285^2 .

It is a cyclic number.

It is not a de Polignac number, because 5102519010781 - 2¹⁹ = 5102518486493 is a prime.

It is a super-2 number, since 2×5102519010781² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5102519010731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2551259505390 + 2551259505391.

It is an arithmetic number, because the mean of its divisors is an integer number (2551259505391).

Almost surely, 2^{5102519010781} is an apocalyptic number.

It is an amenable number.

5102519010781 is a deficient number, since it is larger than the sum of its proper divisors (1).

5102519010781 is an equidigital number, since it uses as much as digits as its factorization.

5102519010781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 40.

The spelling of 5102519010781 in words is "five trillion, one hundred two billion, five hundred nineteen million, ten thousand, seven hundred eighty-one".