78960429869 has 2 divisors, whose sum is σ = 78960429870. Its totient is φ = 78960429868.

The previous prime is 78960429859. The next prime is 78960429913. The reversal of 78960429869 is 96892406987.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58256097769 + 20704332100 = 241363^2 + 143890^2 .

It is a cyclic number.

It is not a de Polignac number, because 78960429869 - 2⁴ = 78960429853 is a prime.

It is a super-2 number, since 2×78960429869² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78960429799 and 78960429808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78960429829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39480214934 + 39480214935.

It is an arithmetic number, because the mean of its divisors is an integer number (39480214935).

Almost surely, 2^78960429869 is an apocalyptic number.

It is an amenable number.

78960429869 is a deficient number, since it is larger than the sum of its proper divisors (1).

78960429869 is an equidigital number, since it uses as much as digits as its factorization.

78960429869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94058496, while the sum is 68.

The spelling of 78960429869 in words is "seventy-eight billion, nine hundred sixty million, four hundred twenty-nine thousand, eight hundred sixty-nine".