86249390506 has 8 divisors (see below), whose sum is σ = 133835261220. Its totient is φ = 41637636768.

The previous prime is 86249390471. The next prime is 86249390509. The reversal of 86249390506 is 60509394268.

It can be written as a sum of positive squares in 2 ways, for example, as 83468410281 + 2780980225 = 288909^2 + 52735^2 .

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

It is not an unprimeable number, because it can be changed into a prime (86249390509) 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, 743529171 + ... + 743529286.

Almost surely, 2^86249390506 is an apocalyptic number.

86249390506 is a deficient number, since it is larger than the sum of its proper divisors (47585870714).

86249390506 is a wasteful number, since it uses less digits than its factorization.

86249390506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487058488.

The product of its (nonzero) digits is 2799360, while the sum is 52.

The spelling of 86249390506 in words is "eighty-six billion, two hundred forty-nine million, three hundred ninety thousand, five hundred six".