86326639840 has 144 divisors (see below), whose sum is σ = 249731067600. Its totient is φ = 28039882752.

The previous prime is 86326639831. The next prime is 86326639877. The reversal of 86326639840 is 4893662368.

It is a congruent number.

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, 140805 + ... + 438724.

It is an arithmetic number, because the mean of its divisors is an integer number (1734243525).

Almost surely, 2^86326639840 is an apocalyptic number.

86326639840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

86326639840 is an abundant number, since it is smaller than the sum of its proper divisors (163404427760).

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

86326639840 is a wasteful number, since it uses less digits than its factorization.

86326639840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579577 (or 579562 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 55.

The spelling of 86326639840 in words is "eighty-six billion, three hundred twenty-six million, six hundred thirty-nine thousand, eight hundred forty".