78681118425 has 48 divisors (see below), whose sum is σ = 160106002560. Its totient is φ = 33201699840.

The previous prime is 78681118423. The next prime is 78681118471. The reversal of 78681118425 is 52481118687.

It is not a de Polignac number, because 78681118425 - 2¹ = 78681118423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78681118423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5757360 + ... + 5771009.

It is an arithmetic number, because the mean of its divisors is an integer number (3335541720).

Almost surely, 2^78681118425 is an apocalyptic number.

78681118425 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

78681118425 is an abundant number, since it is smaller than the sum of its proper divisors (81424884135).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78681118425 is a wasteful number, since it uses less digits than its factorization.

78681118425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11528402 (or 11528397 counting only the distinct ones).

The product of its digits is 860160, while the sum is 51.

The spelling of 78681118425 in words is "seventy-eight billion, six hundred eighty-one million, one hundred eighteen thousand, four hundred twenty-five".