78045030827 has 2 divisors, whose sum is σ = 78045030828. Its totient is φ = 78045030826.

The previous prime is 78045030779. The next prime is 78045030863. The reversal of 78045030827 is 72803054087.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (72803054087) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78045030827 is a prime.

It is not a weakly prime, because it can be changed into another prime (78045030887) 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, 39022515413 + 39022515414.

It is an arithmetic number, because the mean of its divisors is an integer number (39022515414).

Almost surely, 2^78045030827 is an apocalyptic number.

78045030827 is a deficient number, since it is larger than the sum of its proper divisors (1).

78045030827 is an equidigital number, since it uses as much as digits as its factorization.

78045030827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 376320, while the sum is 44.

The spelling of 78045030827 in words is "seventy-eight billion, forty-five million, thirty thousand, eight hundred twenty-seven".