28378052567 has 2 divisors, whose sum is σ = 28378052568. Its totient is φ = 28378052566.

The previous prime is 28378052557. The next prime is 28378052609. The reversal of 28378052567 is 76525087382.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28378052567 - 2⁶ = 28378052503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28378052557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14189026283 + 14189026284.

It is an arithmetic number, because the mean of its divisors is an integer number (14189026284).

Almost surely, 2^28378052567 is an apocalyptic number.

28378052567 is a deficient number, since it is larger than the sum of its proper divisors (1).

28378052567 is an equidigital number, since it uses as much as digits as its factorization.

28378052567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5644800, while the sum is 53.

The spelling of 28378052567 in words is "twenty-eight billion, three hundred seventy-eight million, fifty-two thousand, five hundred sixty-seven".