78930414361 has 2 divisors, whose sum is σ = 78930414362. Its totient is φ = 78930414360.

The previous prime is 78930414313. The next prime is 78930414377. The reversal of 78930414361 is 16341403987.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63073308736 + 15857105625 = 251144^2 + 125925^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78930414361 is a prime.

It is a super-2 number, since 2×78930414361² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78930424361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39465207180 + 39465207181.

It is an arithmetic number, because the mean of its divisors is an integer number (39465207181).

Almost surely, 2^78930414361 is an apocalyptic number.

It is an amenable number.

78930414361 is a deficient number, since it is larger than the sum of its proper divisors (1).

78930414361 is an equidigital number, since it uses as much as digits as its factorization.

78930414361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 78930414361 in words is "seventy-eight billion, nine hundred thirty million, four hundred fourteen thousand, three hundred sixty-one".