86521390718 has 8 divisors (see below), whose sum is σ = 148322384112. Its totient is φ = 37080596016.

The previous prime is 86521390717. The next prime is 86521390723. The reversal of 86521390718 is 81709312568.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86521390717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3090049655 + ... + 3090049682.

It is an arithmetic number, because the mean of its divisors is an integer number (18540298014).

Almost surely, 2^86521390718 is an apocalyptic number.

86521390718 is a deficient number, since it is larger than the sum of its proper divisors (61800993394).

86521390718 is a wasteful number, since it uses less digits than its factorization.

86521390718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6180099346.

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 86521390718 in words is "eighty-six billion, five hundred twenty-one million, three hundred ninety thousand, seven hundred eighteen".