28536477757 has 2 divisors, whose sum is σ = 28536477758. Its totient is φ = 28536477756.

The previous prime is 28536477751. The next prime is 28536477779. The reversal of 28536477757 is 75777463582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18338305561 + 10198172196 = 135419^2 + 100986^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28536477757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28536477695 and 28536477704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28536477751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14268238878 + 14268238879.

It is an arithmetic number, because the mean of its divisors is an integer number (14268238879).

Almost surely, 2^28536477757 is an apocalyptic number.

It is an amenable number.

28536477757 is a deficient number, since it is larger than the sum of its proper divisors (1).

28536477757 is an equidigital number, since it uses as much as digits as its factorization.

28536477757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69148800, while the sum is 61.

The spelling of 28536477757 in words is "twenty-eight billion, five hundred thirty-six million, four hundred seventy-seven thousand, seven hundred fifty-seven".