28718760061 has 2 divisors, whose sum is σ = 28718760062. Its totient is φ = 28718760060.

The previous prime is 28718760017. The next prime is 28718760071. The reversal of 28718760061 is 16006781782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28689923161 + 28836900 = 169381^2 + 5370^2 .

It is a cyclic number.

It is not a de Polignac number, because 28718760061 - 2²³ = 28710371453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28718759993 and 28718760020.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28718760071) 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, 14359380030 + 14359380031.

It is an arithmetic number, because the mean of its divisors is an integer number (14359380031).

Almost surely, 2^28718760061 is an apocalyptic number.

It is an amenable number.

28718760061 is a deficient number, since it is larger than the sum of its proper divisors (1).

28718760061 is an equidigital number, since it uses as much as digits as its factorization.

28718760061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 46.

The spelling of 28718760061 in words is "twenty-eight billion, seven hundred eighteen million, seven hundred sixty thousand, sixty-one".