86521491054 has 24 divisors (see below), whose sum is σ = 187472972232. Its totient is φ = 28838998320.

The previous prime is 86521491037. The next prime is 86521491059. The reversal of 86521491054 is 45019412568.

86521491054 is a `hidden beast` number, since 86 + 521 + 49 + 1 + 0 + 5 + 4 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86521491059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 263812 + ... + 492584.

It is an arithmetic number, because the mean of its divisors is an integer number (7811373843).

Almost surely, 2^86521491054 is an apocalyptic number.

86521491054 is an abundant number, since it is smaller than the sum of its proper divisors (100951481178).

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

86521491054 is a wasteful number, since it uses less digits than its factorization.

86521491054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249792 (or 249789 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 86521491054 in words is "eighty-six billion, five hundred twenty-one million, four hundred ninety-one thousand, fifty-four".