78362559073 has 2 divisors, whose sum is σ = 78362559074. Its totient is φ = 78362559072.

The previous prime is 78362559059. The next prime is 78362559133. The reversal of 78362559073 is 37095526387.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69617877904 + 8744681169 = 263852^2 + 93513^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78362559073 is a prime.

It is a super-2 number, since 2×78362559073² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78362559043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39181279536 + 39181279537.

It is an arithmetic number, because the mean of its divisors is an integer number (39181279537).

Almost surely, 2^78362559073 is an apocalyptic number.

It is an amenable number.

78362559073 is a deficient number, since it is larger than the sum of its proper divisors (1).

78362559073 is an equidigital number, since it uses as much as digits as its factorization.

78362559073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9525600, while the sum is 55.

The spelling of 78362559073 in words is "seventy-eight billion, three hundred sixty-two million, five hundred fifty-nine thousand, seventy-three".