86224778788 has 24 divisors (see below), whose sum is σ = 158897934720. Its totient is φ = 40827163680.

The previous prime is 86224778779. The next prime is 86224778789. The reversal of 86224778788 is 88787742268.

It is not an unprimeable number, because it can be changed into a prime (86224778789) 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, 29803 + ... + 416338.

It is an arithmetic number, because the mean of its divisors is an integer number (6620747280).

Almost surely, 2^86224778788 is an apocalyptic number.

It is an amenable number.

86224778788 is a deficient number, since it is larger than the sum of its proper divisors (72673155932).

86224778788 is a wasteful number, since it uses less digits than its factorization.

86224778788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448707 (or 448705 counting only the distinct ones).

The product of its digits is 134873088, while the sum is 67.

The spelling of 86224778788 in words is "eighty-six billion, two hundred twenty-four million, seven hundred seventy-eight thousand, seven hundred eighty-eight".