78530415413 has 2 divisors, whose sum is σ = 78530415414. Its totient is φ = 78530415412.

The previous prime is 78530415409. The next prime is 78530415427. The reversal of 78530415413 is 31451403587.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78376481764 + 153933649 = 279958^2 + 12407^2 .

It is an emirp because it is prime and its reverse (31451403587) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78530415413 - 2² = 78530415409 is a prime.

It is a super-2 number, since 2×78530415413² (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 (78530415113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39265207706 + 39265207707.

It is an arithmetic number, because the mean of its divisors is an integer number (39265207707).

Almost surely, 2^78530415413 is an apocalyptic number.

It is an amenable number.

78530415413 is a deficient number, since it is larger than the sum of its proper divisors (1).

78530415413 is an equidigital number, since it uses as much as digits as its factorization.

78530415413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 78530415413 in words is "seventy-eight billion, five hundred thirty million, four hundred fifteen thousand, four hundred thirteen".