28450067377 has 2 divisors, whose sum is σ = 28450067378. Its totient is φ = 28450067376.

The previous prime is 28450067369. The next prime is 28450067389. The reversal of 28450067377 is 77376005482.

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., 28404383296 + 45684081 = 168536^2 + 6759^2 .

It is a cyclic number.

It is not a de Polignac number, because 28450067377 - 2³ = 28450067369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28450067377.

It is not a weakly prime, because it can be changed into another prime (28450067077) 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, 14225033688 + 14225033689.

It is an arithmetic number, because the mean of its divisors is an integer number (14225033689).

Almost surely, 2^28450067377 is an apocalyptic number.

It is an amenable number.

28450067377 is a deficient number, since it is larger than the sum of its proper divisors (1).

28450067377 is an equidigital number, since it uses as much as digits as its factorization.

28450067377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1975680, while the sum is 49.

The spelling of 28450067377 in words is "twenty-eight billion, four hundred fifty million, sixty-seven thousand, three hundred seventy-seven".