86815400208 has 40 divisors (see below), whose sum is σ = 224884261248. Its totient is φ = 28859609472.

The previous prime is 86815400197. The next prime is 86815400209. The reversal of 86815400208 is 80200451868.

It is a self number, because there is not a number n which added to its sum of digits gives 86815400208.

It is not an unprimeable number, because it can be changed into a prime (86815400209) 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, 2446491 + ... + 2481722.

Almost surely, 2^86815400208 is an apocalyptic number.

It is an amenable number.

86815400208 is an abundant number, since it is smaller than the sum of its proper divisors (138068861040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86815400208 is a wasteful number, since it uses less digits than its factorization.

86815400208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4928591 (or 4928585 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 42.

The spelling of 86815400208 in words is "eighty-six billion, eight hundred fifteen million, four hundred thousand, two hundred eight".