78328209763 has 2 divisors, whose sum is σ = 78328209764. Its totient is φ = 78328209762.

The previous prime is 78328209689. The next prime is 78328209809. The reversal of 78328209763 is 36790282387.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78328209763 - 2¹³ = 78328201571 is a prime.

It is a super-2 number, since 2×78328209763² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78328209263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39164104881 + 39164104882.

It is an arithmetic number, because the mean of its divisors is an integer number (39164104882).

Almost surely, 2^78328209763 is an apocalyptic number.

78328209763 is a deficient number, since it is larger than the sum of its proper divisors (1).

78328209763 is an equidigital number, since it uses as much as digits as its factorization.

78328209763 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 78328209763 in words is "seventy-eight billion, three hundred twenty-eight million, two hundred nine thousand, seven hundred sixty-three".