86510220812 has 24 divisors (see below), whose sum is σ = 158792781504. Its totient is φ = 41190602112.

The previous prime is 86510220809. The next prime is 86510220829. The reversal of 86510220812 is 21802201568.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6211433 + ... + 6225344.

It is an arithmetic number, because the mean of its divisors is an integer number (6616365896).

Almost surely, 2^86510220812 is an apocalyptic number.

It is an amenable number.

86510220812 is a deficient number, since it is larger than the sum of its proper divisors (72282560692).

86510220812 is a wasteful number, since it uses less digits than its factorization.

86510220812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12436865 (or 12436863 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 35.

The spelling of 86510220812 in words is "eighty-six billion, five hundred ten million, two hundred twenty thousand, eight hundred twelve".