5102178729961 has 2 divisors, whose sum is σ = 5102178729962. Its totient is φ = 5102178729960.

The previous prime is 5102178729863. The next prime is 5102178730003. The reversal of 5102178729961 is 1699278712015.

5102178729961 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3035539598400 + 2066639131561 = 1742280^2 + 1437581^2 .

It is a cyclic number.

It is not a de Polignac number, because 5102178729961 - 2²¹ = 5102176632809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5102178729896 and 5102178729905.

It is not a weakly prime, because it can be changed into another prime (5106178729961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2551089364980 + 2551089364981.

It is an arithmetic number, because the mean of its divisors is an integer number (2551089364981).

Almost surely, 2^{5102178729961} is an apocalyptic number.

It is an amenable number.

5102178729961 is a deficient number, since it is larger than the sum of its proper divisors (1).

5102178729961 is an equidigital number, since it uses as much as digits as its factorization.

5102178729961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 58.

The spelling of 5102178729961 in words is "five trillion, one hundred two billion, one hundred seventy-eight million, seven hundred twenty-nine thousand, nine hundred sixty-one".