28077464417 has 2 divisors, whose sum is σ = 28077464418. Its totient is φ = 28077464416.

The previous prime is 28077464407. The next prime is 28077464449. The reversal of 28077464417 is 71446477082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25523577121 + 2553887296 = 159761^2 + 50536^2 .

It is a cyclic number.

It is not a de Polignac number, because 28077464417 - 2³² = 23782497121 is a prime.

It is a super-2 number, since 2×28077464417² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28077464407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14038732208 + 14038732209.

It is an arithmetic number, because the mean of its divisors is an integer number (14038732209).

Almost surely, 2^28077464417 is an apocalyptic number.

It is an amenable number.

28077464417 is a deficient number, since it is larger than the sum of its proper divisors (1).

28077464417 is an equidigital number, since it uses as much as digits as its factorization.

28077464417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2107392, while the sum is 50.

The spelling of 28077464417 in words is "twenty-eight billion, seventy-seven million, four hundred sixty-four thousand, four hundred seventeen".