86210578787 has 16 divisors (see below), whose sum is σ = 87485987520. Its totient is φ = 84944208000.

The previous prime is 86210578723. The next prime is 86210578801. The reversal of 86210578787 is 78787501268.

It is a cyclic number.

It is not a de Polignac number, because 86210578787 - 2⁶ = 86210578723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86210572787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47082962 + ... + 47084792.

It is an arithmetic number, because the mean of its divisors is an integer number (5467874220).

Almost surely, 2^86210578787 is an apocalyptic number.

86210578787 is a deficient number, since it is larger than the sum of its proper divisors (1275408733).

86210578787 is a wasteful number, since it uses less digits than its factorization.

86210578787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3934.

The product of its (nonzero) digits is 10536960, while the sum is 59.

The spelling of 86210578787 in words is "eighty-six billion, two hundred ten million, five hundred seventy-eight thousand, seven hundred eighty-seven".