86381985450 has 24 divisors (see below), whose sum is σ = 214227324288. Its totient is φ = 23035196080.

The previous prime is 86381985449. The next prime is 86381985457. The reversal of 86381985450 is 5458918368.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86381985457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 287939802 + ... + 287940101.

It is an arithmetic number, because the mean of its divisors is an integer number (8926138512).

Almost surely, 2^86381985450 is an apocalyptic number.

86381985450 is an abundant number, since it is smaller than the sum of its proper divisors (127845338838).

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

86381985450 is a wasteful number, since it uses less digits than its factorization.

86381985450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575879918 (or 575879913 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 57.

The spelling of 86381985450 in words is "eighty-six billion, three hundred eighty-one million, nine hundred eighty-five thousand, four hundred fifty".