78216344476027 has 2 divisors, whose sum is σ = 78216344476028. Its totient is φ = 78216344476026.

The previous prime is 78216344476003. The next prime is 78216344476037. The reversal of 78216344476027 is 72067444361287.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78216344476027 - 2¹¹ = 78216344473979 is a prime.

It is a super-2 number, since 2×78216344476027² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78216344476037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39108172238013 + 39108172238014.

It is an arithmetic number, because the mean of its divisors is an integer number (39108172238014).

Almost surely, 2^{78216344476027} is an apocalyptic number.

78216344476027 is a deficient number, since it is larger than the sum of its proper divisors (1).

78216344476027 is an equidigital number, since it uses as much as digits as its factorization.

78216344476027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75866112, while the sum is 61.

The spelling of 78216344476027 in words is "seventy-eight trillion, two hundred sixteen billion, three hundred forty-four million, four hundred seventy-six thousand, twenty-seven".