28376929897 has 2 divisors, whose sum is σ = 28376929898. Its totient is φ = 28376929896.

The previous prime is 28376929883. The next prime is 28376929909. The reversal of 28376929897 is 79892967382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24417500121 + 3959429776 = 156261^2 + 62924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28376929897 is a prime.

It is not a weakly prime, because it can be changed into another prime (28376929697) 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, 14188464948 + 14188464949.

It is an arithmetic number, because the mean of its divisors is an integer number (14188464949).

Almost surely, 2^28376929897 is an apocalyptic number.

It is an amenable number.

28376929897 is a deficient number, since it is larger than the sum of its proper divisors (1).

28376929897 is an equidigital number, since it uses as much as digits as its factorization.

28376929897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 164602368, while the sum is 70.

The spelling of 28376929897 in words is "twenty-eight billion, three hundred seventy-six million, nine hundred twenty-nine thousand, eight hundred ninety-seven".