78552580387 has 2 divisors, whose sum is σ = 78552580388. Its totient is φ = 78552580386.

The previous prime is 78552580369. The next prime is 78552580429. The reversal of 78552580387 is 78308525587.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78552580387 - 2²³ = 78544191779 is a prime.

It is not a weakly prime, because it can be changed into another prime (78552580787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39276290193 + 39276290194.

It is an arithmetic number, because the mean of its divisors is an integer number (39276290194).

Almost surely, 2^78552580387 is an apocalyptic number.

78552580387 is a deficient number, since it is larger than the sum of its proper divisors (1).

78552580387 is an equidigital number, since it uses as much as digits as its factorization.

78552580387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816000, while the sum is 58.

The spelling of 78552580387 in words is "seventy-eight billion, five hundred fifty-two million, five hundred eighty thousand, three hundred eighty-seven".