78620488847 has 2 divisors, whose sum is σ = 78620488848. Its totient is φ = 78620488846.

The previous prime is 78620488841. The next prime is 78620488861. The reversal of 78620488847 is 74888402687.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78620488847 - 2²⁰ = 78619440271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78620488847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78620488841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39310244423 + 39310244424.

It is an arithmetic number, because the mean of its divisors is an integer number (39310244424).

Almost surely, 2^78620488847 is an apocalyptic number.

78620488847 is a deficient number, since it is larger than the sum of its proper divisors (1).

78620488847 is an equidigital number, since it uses as much as digits as its factorization.

78620488847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38535168, while the sum is 62.

The spelling of 78620488847 in words is "seventy-eight billion, six hundred twenty million, four hundred eighty-eight thousand, eight hundred forty-seven".