86653778018 has 32 divisors (see below), whose sum is σ = 140192277120. Its totient is φ = 40072728960.

The previous prime is 86653778011. The next prime is 86653778033. The reversal of 86653778018 is 81087735668.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is not an unprimeable number, because it can be changed into a prime (86653778011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96155 + ... + 427262.

It is an arithmetic number, because the mean of its divisors is an integer number (4381008660).

Almost surely, 2^86653778018 is an apocalyptic number.

86653778018 is a deficient number, since it is larger than the sum of its proper divisors (53538499102).

86653778018 is a wasteful number, since it uses less digits than its factorization.

86653778018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523562.

The product of its (nonzero) digits is 13547520, while the sum is 59.

The spelling of 86653778018 in words is "eighty-six billion, six hundred fifty-three million, seven hundred seventy-eight thousand, eighteen".