78025318058709 has 56 divisors (see below), whose sum is σ = 138306753106560. Its totient is φ = 43048451261088.

The previous prime is 78025318058683. The next prime is 78025318058731. The reversal of 78025318058709 is 90785081352087.

It is not a de Polignac number, because 78025318058709 - 2²¹ = 78025315961557 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78025318058749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 263474217 + ... + 263770190.

Almost surely, 2^{78025318058709} is an apocalyptic number.

It is an amenable number.

78025318058709 is a deficient number, since it is larger than the sum of its proper divisors (60281435047851).

78025318058709 is an equidigital number, since it uses as much as digits as its factorization.

78025318058709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527244461 (or 527244446 counting only the distinct ones).

The product of its (nonzero) digits is 33868800, while the sum is 63.

The spelling of 78025318058709 in words is "seventy-eight trillion, twenty-five billion, three hundred eighteen million, fifty-eight thousand, seven hundred nine".