78616162073 has 2 divisors, whose sum is σ = 78616162074. Its totient is φ = 78616162072.

The previous prime is 78616162049. The next prime is 78616162087. The reversal of 78616162073 is 37026161687.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45801564169 + 32814597904 = 214013^2 + 181148^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78616162073 is a prime.

It is not a weakly prime, because it can be changed into another prime (78616162013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39308081036 + 39308081037.

It is an arithmetic number, because the mean of its divisors is an integer number (39308081037).

Almost surely, 2^78616162073 is an apocalyptic number.

It is an amenable number.

78616162073 is a deficient number, since it is larger than the sum of its proper divisors (1).

78616162073 is an equidigital number, since it uses as much as digits as its factorization.

78616162073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 47.

The spelling of 78616162073 in words is "seventy-eight billion, six hundred sixteen million, one hundred sixty-two thousand, seventy-three".