28719902063 has 2 divisors, whose sum is σ = 28719902064. Its totient is φ = 28719902062.

The previous prime is 28719902041. The next prime is 28719902093. The reversal of 28719902063 is 36020991782.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28719902063 - 2⁶ = 28719901999 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 28719901999 and 28719902017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28719902033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14359951031 + 14359951032.

It is an arithmetic number, because the mean of its divisors is an integer number (14359951032).

Almost surely, 2^28719902063 is an apocalyptic number.

28719902063 is a deficient number, since it is larger than the sum of its proper divisors (1).

28719902063 is an equidigital number, since it uses as much as digits as its factorization.

28719902063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 47.

The spelling of 28719902063 in words is "twenty-eight billion, seven hundred nineteen million, nine hundred two thousand, sixty-three".