78554492927 has 2 divisors, whose sum is σ = 78554492928. Its totient is φ = 78554492926.

The previous prime is 78554492921. The next prime is 78554492941. The reversal of 78554492927 is 72929445587.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78554492927 - 2²⁰ = 78553444351 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78554492927.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78554492921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39277246463 + 39277246464.

It is an arithmetic number, because the mean of its divisors is an integer number (39277246464).

Almost surely, 2^78554492927 is an apocalyptic number.

78554492927 is a deficient number, since it is larger than the sum of its proper divisors (1).

78554492927 is an equidigital number, since it uses as much as digits as its factorization.

78554492927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50803200, while the sum is 62.

The spelling of 78554492927 in words is "seventy-eight billion, five hundred fifty-four million, four hundred ninety-two thousand, nine hundred twenty-seven".