86933450521 has 4 divisors (see below), whose sum is σ = 86934310452. Its totient is φ = 86932590592.

The previous prime is 86933450503. The next prime is 86933450551. The reversal of 86933450521 is 12505433968.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 66956737600 + 19976712921 = 258760^2 + 141339^2 .

It is a cyclic number.

It is not a de Polignac number, because 86933450521 - 2⁵ = 86933450489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86933450551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254440 + ... + 488473.

It is an arithmetic number, because the mean of its divisors is an integer number (21733577613).

Almost surely, 2^86933450521 is an apocalyptic number.

It is an amenable number.

86933450521 is a deficient number, since it is larger than the sum of its proper divisors (859931).

86933450521 is a wasteful number, since it uses less digits than its factorization.

86933450521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859930.

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 86933450521 in words is "eighty-six billion, nine hundred thirty-three million, four hundred fifty thousand, five hundred twenty-one".