28635668517061 has 2 divisors, whose sum is σ = 28635668517062. Its totient is φ = 28635668517060.

The previous prime is 28635668517047. The next prime is 28635668517083. The reversal of 28635668517061 is 16071586653682.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28618155964836 + 17512552225 = 5349594^2 + 132335^2 .

It is a cyclic number.

It is not a de Polignac number, because 28635668517061 - 2⁹ = 28635668516549 is a prime.

It is a super-2 number, since 2×28635668517061² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28635668516984 and 28635668517002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28635668517031) 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, 14317834258530 + 14317834258531.

It is an arithmetic number, because the mean of its divisors is an integer number (14317834258531).

Almost surely, 2^{28635668517061} is an apocalyptic number.

It is an amenable number.

28635668517061 is a deficient number, since it is larger than the sum of its proper divisors (1).

28635668517061 is an equidigital number, since it uses as much as digits as its factorization.

28635668517061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87091200, while the sum is 64.

The spelling of 28635668517061 in words is "twenty-eight trillion, six hundred thirty-five billion, six hundred sixty-eight million, five hundred seventeen thousand, sixty-one".