86578716580 has 24 divisors (see below), whose sum is σ = 181916332920. Its totient is φ = 34612243200.

The previous prime is 86578716563. The next prime is 86578716593. The reversal of 86578716580 is 8561787568.

It can be written as a sum of positive squares in 4 ways, for example, as 8459584576 + 78119132004 = 91976^2 + 279498^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1165795 + ... + 1237834.

It is an arithmetic number, because the mean of its divisors is an integer number (7579847205).

Almost surely, 2^86578716580 is an apocalyptic number.

It is an amenable number.

86578716580 is an abundant number, since it is smaller than the sum of its proper divisors (95337616340).

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

86578716580 is a wasteful number, since it uses less digits than its factorization.

86578716580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405439 (or 2405437 counting only the distinct ones).

The product of its (nonzero) digits is 22579200, while the sum is 61.

The spelling of 86578716580 in words is "eighty-six billion, five hundred seventy-eight million, seven hundred sixteen thousand, five hundred eighty".