28077112447 has 2 divisors, whose sum is σ = 28077112448. Its totient is φ = 28077112446.

The previous prime is 28077112417. The next prime is 28077112457. The reversal of 28077112447 is 74421177082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28077112447 - 2⁷ = 28077112319 is a prime.

It is a super-2 number, since 2×28077112447² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28077112417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14038556223 + 14038556224.

It is an arithmetic number, because the mean of its divisors is an integer number (14038556224).

Almost surely, 2^28077112447 is an apocalyptic number.

28077112447 is a deficient number, since it is larger than the sum of its proper divisors (1).

28077112447 is an equidigital number, since it uses as much as digits as its factorization.

28077112447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 175616, while the sum is 43.

The spelling of 28077112447 in words is "twenty-eight billion, seventy-seven million, one hundred twelve thousand, four hundred forty-seven".