86785425720 has 96 divisors (see below), whose sum is σ = 322345876320. Its totient is φ = 19836668160.

The previous prime is 86785425689. The next prime is 86785425751. The reversal of 86785425720 is 2752458768.

86785425720 is a `hidden beast` number, since 8 + 6 + 78 + 542 + 5 + 7 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (86785425689) and next prime (86785425751).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17216811 + ... + 17221850.

It is an arithmetic number, because the mean of its divisors is an integer number (3357769545).

Almost surely, 2^86785425720 is an apocalyptic number.

It is an amenable number.

86785425720 is an abundant number, since it is smaller than the sum of its proper divisors (235560450600).

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

86785425720 is a wasteful number, since it uses less digits than its factorization.

86785425720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34438685 (or 34438678 counting only the distinct ones).

The product of its (nonzero) digits is 7526400, while the sum is 54.

The spelling of 86785425720 in words is "eighty-six billion, seven hundred eighty-five million, four hundred twenty-five thousand, seven hundred twenty".