28140002377 has 2 divisors, whose sum is σ = 28140002378. Its totient is φ = 28140002376.

The previous prime is 28140002351. The next prime is 28140002399. The reversal of 28140002377 is 77320004182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25795893321 + 2344109056 = 160611^2 + 48416^2 .

It is a cyclic number.

It is not a de Polignac number, because 28140002377 - 2⁷ = 28140002249 is a prime.

It is not a weakly prime, because it can be changed into another prime (28140002677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14070001188 + 14070001189.

It is an arithmetic number, because the mean of its divisors is an integer number (14070001189).

Almost surely, 2^28140002377 is an apocalyptic number.

It is an amenable number.

28140002377 is a deficient number, since it is larger than the sum of its proper divisors (1).

28140002377 is an equidigital number, since it uses as much as digits as its factorization.

28140002377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 34.

The spelling of 28140002377 in words is "twenty-eight billion, one hundred forty million, two thousand, three hundred seventy-seven".