78120130573 has 2 divisors, whose sum is σ = 78120130574. Its totient is φ = 78120130572.

The previous prime is 78120130513. The next prime is 78120130577. The reversal of 78120130573 is 37503102187.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68266193284 + 9853937289 = 261278^2 + 99267^2 .

It is an emirp because it is prime and its reverse (37503102187) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78120130573 - 2⁹ = 78120130061 is a prime.

It is a super-2 number, since 2×78120130573² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78120130577) 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, 39060065286 + 39060065287.

It is an arithmetic number, because the mean of its divisors is an integer number (39060065287).

Almost surely, 2^78120130573 is an apocalyptic number.

It is an amenable number.

78120130573 is a deficient number, since it is larger than the sum of its proper divisors (1).

78120130573 is an equidigital number, since it uses as much as digits as its factorization.

78120130573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 37.

The spelling of 78120130573 in words is "seventy-eight billion, one hundred twenty million, one hundred thirty thousand, five hundred seventy-three".