28076853661 has 2 divisors, whose sum is σ = 28076853662. Its totient is φ = 28076853660.

The previous prime is 28076853631. The next prime is 28076853697. The reversal of 28076853661 is 16635867082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20645379225 + 7431474436 = 143685^2 + 86206^2 .

It is a cyclic number.

It is not a de Polignac number, because 28076853661 - 2²³ = 28068465053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28076853599 and 28076853608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28076853601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14038426830 + 14038426831.

It is an arithmetic number, because the mean of its divisors is an integer number (14038426831).

Almost surely, 2^28076853661 is an apocalyptic number.

It is an amenable number.

28076853661 is a deficient number, since it is larger than the sum of its proper divisors (1).

28076853661 is an equidigital number, since it uses as much as digits as its factorization.

28076853661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 28076853661 in words is "twenty-eight billion, seventy-six million, eight hundred fifty-three thousand, six hundred sixty-one".