78275425317 has 8 divisors (see below), whose sum is σ = 105342628896. Its totient is φ = 51695919312.

The previous prime is 78275425247. The next prime is 78275425321. The reversal of 78275425317 is 71352457287.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78275425317 - 2⁸ = 78275425061 is a prime.

It is a super-2 number, since 2×78275425317² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78275425317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78275425337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121924018 + ... + 121924659.

It is an arithmetic number, because the mean of its divisors is an integer number (13167828612).

Almost surely, 2^78275425317 is an apocalyptic number.

It is an amenable number.

78275425317 is a deficient number, since it is larger than the sum of its proper divisors (27067203579).

78275425317 is a wasteful number, since it uses less digits than its factorization.

78275425317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243848787.

The product of its digits is 3292800, while the sum is 51.

The spelling of 78275425317 in words is "seventy-eight billion, two hundred seventy-five million, four hundred twenty-five thousand, three hundred seventeen".