78785281275 has 12 divisors (see below), whose sum is σ = 130258331832. Its totient is φ = 42018816640.

The previous prime is 78785281261. The next prime is 78785281277. The reversal of 78785281275 is 57218258787.

It is not a de Polignac number, because 78785281275 - 2⁴ = 78785281259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78785281277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 525235134 + ... + 525235283.

It is an arithmetic number, because the mean of its divisors is an integer number (10854860986).

Almost surely, 2^78785281275 is an apocalyptic number.

78785281275 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

78785281275 is a deficient number, since it is larger than the sum of its proper divisors (51473050557).

78785281275 is a wasteful number, since it uses less digits than its factorization.

78785281275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050470430 (or 1050470425 counting only the distinct ones).

The product of its digits is 17561600, while the sum is 60.

The spelling of 78785281275 in words is "seventy-eight billion, seven hundred eighty-five million, two hundred eighty-one thousand, two hundred seventy-five".