86285008720778 has 48 divisors (see below), whose sum is σ = 158642594438400. Its totient is φ = 34997659139520.

The previous prime is 86285008720747. The next prime is 86285008720829. The reversal of 86285008720778 is 87702780058268.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21535163 + ... + 25225646.

It is an arithmetic number, because the mean of its divisors is an integer number (3305054050800).

Almost surely, 2^{86285008720778} is an apocalyptic number.

86285008720778 is a deficient number, since it is larger than the sum of its proper divisors (72357585717622).

86285008720778 is a wasteful number, since it uses less digits than its factorization.

86285008720778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46761835 (or 46761828 counting only the distinct ones).

The product of its (nonzero) digits is 168591360, while the sum is 68.

The spelling of 86285008720778 in words is "eighty-six trillion, two hundred eighty-five billion, eight million, seven hundred twenty thousand, seven hundred seventy-eight".