86320643500 has 384 divisors, whose sum is σ = 237805940736. Its totient is φ = 26649907200.

The previous prime is 86320643491. The next prime is 86320643501. The reversal of 86320643500 is 534602368.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 86320643500.

It is not an unprimeable number, because it can be changed into a prime (86320643501) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 529574419 + ... + 529574581.

It is an arithmetic number, because the mean of its divisors is an integer number (619286304).

Almost surely, 2^86320643500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86320643500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118902970368).

86320643500 is an abundant number, since it is smaller than the sum of its proper divisors (151485297236).

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

86320643500 is a wasteful number, since it uses less digits than its factorization.

86320643500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 86320643500 in words is "eighty-six billion, three hundred twenty million, six hundred forty-three thousand, five hundred".