78228482287 has 12 divisors (see below), whose sum is σ = 79587963840. Its totient is φ = 76890520512.

The previous prime is 78228482281. The next prime is 78228482291.

It is a happy number.

78228482287 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 78228482287 - 2³¹ = 76080998639 is a prime.

It is a super-2 number, since 2×78228482287² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78228482281) 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, 1363639 + ... + 1419847.

It is an arithmetic number, because the mean of its divisors is an integer number (6632330320).

Almost surely, 2^78228482287 is an apocalyptic number.

78228482287 is a deficient number, since it is larger than the sum of its proper divisors (1359481553).

78228482287 is an equidigital number, since it uses as much as digits as its factorization.

78228482287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56590 (or 56511 counting only the distinct ones).

The product of its digits is 12845056, while the sum is 58.

The spelling of 78228482287 in words is "seventy-eight billion, two hundred twenty-eight million, four hundred eighty-two thousand, two hundred eighty-seven".